In one to two sentences, explain how this reaction demonstrates that matter is neither created nor destroyed in a chemical reaction.

In One To Two Sentences, Explain How This Reaction Demonstrates That Matter Is Neither Created Nor Destroyed

Answers

Answer 1

Since the number of atoms which are reacting are equal to the number of to the number of atoms in the product, this reaction demonstrates that matter is neither created nor destroyed in a chemical reaction.

What is the principle of matter conservation?

Any system that is closed to all exchanges of matter and energy is subject to the law of conservation of matter, which is a general law of physics and chemistry. This law states that regardless of how the components rearrange themselves, the mass of an object or group of things remains constant over time.

A chemical reaction is what?

A chemical reaction is a procedure that causes one group of chemical components to change chemically into another. Chemical reactions, which can frequently be described by a chemical equation, traditionally include changes that solely affect the locations of electrons in the formation and dissolution of chemical bonds between atoms, with no change to the nuclei.

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Related Questions

An element has 6 protons and 6 neutrons. What is the atomic number? What is its mass number?

Answers

Answer:

The atomic is 6, the mass number is 12

Explanation:

The element being described is Carbon.

The number of protons in the nucleus of an atom is called its atomic number, Z.

The number of protons pluss the number of neutronsin the nucleus of an atom gives the atom's mass number, A.

Which of the following is an example of an Arrhenius base? Select one: A. HNO3(aq) B. H3PO4(aq) C. H2CO3(aq) D. H2O(l) E. none of the above

Answers

Answer:

The correct choice is e. Two of the above.

Explanation:

Which of the following could not be responsible for the acceleration of an object?
wind
gravity
density
friction

Answers

Answer:

i believe its friction

Explanation:

friction slows down objects


2 Fe(OH)3 →
Fe2O3 + 3H₂O
100 p
If you have 7.2 moles of Iron(III) Hydroxide how many moles of water will be produced?

Answers

6 moles of water will be produced. after analyzing the stoichiometry of the equation, where the number of water molecules is divided by the molecular mass of water which is 18 grams.

What are Moles?

Standard scientific unit for calculating the number of atoms, molecules, or other specific particles in vast amounts. The mole designates 6.02214076 × \(10^{23}\) units, which is a very large number.

What is Stoichiometry?

To calculate the appropriate quantitative data, a chemistry concept known as stoichiometry uses relationships between the reactants and/or products of a chemical reaction. Understanding the relationships that exist between products and reactants and why they exist, which necessitates understanding how to balance reactions, is crucial before using stoichiometry to perform calculations regarding chemical reactions.

6 moles of water will be produced.

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pOH of the 0.001M NaOH solution is​

Answers

The pOH of the 0.001 M NaOH solution is approximately 3.

To determine the pOH of a solution, we need to know the concentration of hydroxide ions (OH-) in the solution.

In the case of a 0.001 M NaOH solution, we can assume that all of the NaOH dissociates completely in water to form Na+ and OH- ions. Therefore, the concentration of hydroxide ions in the solution is also 0.001 M.

The pOH is calculated using the equation:

pOH = -log[OH-]

Substituting the concentration of hydroxide ions, we have:

pOH = -log(0.001)

Using a calculator, we can evaluate the logarithm:

pOH ≈ 3

Therefore, the pOH of the 0.001 M NaOH solution is approximately 3.

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Which type of bonds do polar covalent bonds break down in chemical reactions?

A. polar covalent and ionic bonds
B. nonpolar covalent bonds and polar covalent bonds
C. ionic bonds and nonpolar bonds
D. none of the above

Answers

Answer:

(C) im pretty sure is the answer

Explanation:

The type of bonds does polar covalent bonds break down in chemical reactions is  ionic bonds and nonpolar bonds. Therefore, option C is correct.

What is an ionic bond ?

Ionic bond is also known as electrovalent bond. The term ionic bond is defined as a chemical bond formed when one atom gives up one or more electrons to another atom.

It is also defined as when positively charged particle produce a bond with negatively charged particle. The chemical molecule sodium chloride is an example of an ionic bond.

In ionic bonding, the electrostatic attraction between oppositely charged ions, or between two atoms with sharply different electronegativities. The type of bonds does polar covalent bonds break down in chemical reactions is  ionic bonds and nonpolar bonds.

Thus, option C is correct.

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-Convert 6.02 x 1020 formula units of MgCl₂ to mol of MgCl₂:​

Answers

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

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A 10.00 mL sample of a solution containing formic acid (a weak acid) was placed in a 25 mL volumetric flask and diluted to the mark with water. A 10.00 mL sample of the diluted formic acid solution was then titrated with 0.1322 M sodium hydroxide. The titration required 15.80 mL of sodium hydroxide to reach the equivalence point. Calculate the molarity and the percentage (by mass) formic acid in the original solution. The density of the formic acid solution was found to be 1.02 g/mL.

Answers

Answer:

Molarity: 0.522M

Percentage by mass: 2.36 (w/w) %

Explanation:

Formic acid, HCOOH reacts with NaOH as follows:

HCOOH + NaOH → NaCOOH + H₂O

To solve this question we must find the moles of NaOH added = Moles formic acid. Taken into account the dilution that was made we can find the moles -And molarity of formic acid and its percentage by mass as follows:

Moles NaOH = Moles HCOOH:

0.01580L * (0.1322mol / L) =0.002089 moles HCOOH

Moles in the original solution:

0.002089 moles HCOOH * (25mL / 10mL) = 0.005222 moles HCOOH

Molarity of the solution:

0.005222 moles HCOOH / 0.01000L =

0.522M

Mass HCOOH in 1L -Molar mass: 46.03g/mol-

0.522moles * (46.03g / mol) = 24.04g HCOOH

Mass solution:

1L = 1000mL * (1.02g / mL) = 1020g solution

Mass percent:

24.04g HCOOH / 1020g solution * 100

2.36 (w/w) %

Once the race had been completed, the students opened their canisters to see if anything remained inside. They wanted to decide if they should modify their techniques for another race. Designs 1, 2, and 3 all still had some solid Alka-Selzter residue in the canister. Design 4 did not. The teacher asked the students to analyze their results as an engineer would. What worked well in the design? What could be improved? Predict what Design Team 3 decided to change.

A)Use hot water
B)Use more water
C)Not to crush the tablet and to use hot water
D)Not to crush the tablet and to use more water

HURRY! GIVING BRAINLY

Answers

Answer:

a

Explanation:because i did the test

which of these is inorganic 1) leaf 2) earthworms 3) minerals 4) bacteria ​

Answers

Answer:

Bacteria

Explanation:

i need to know the answers to this sheet

i need to know the answers to this sheet

Answers

1. The pressure increases when the volume decreases

2. A solid has a fixed volume and is not compressible

3. The volume of 1 mol of an ideal gas is 22.4 L

4. Solid molecules do not move. (Option A)

5. Temperature and volume have a direct relationship

6. Pressure and volume have an indirect relationship

7. The equation to be used is option C

8. The equation to be used is option B

What are the gas laws?

Gas laws serve as a foundation for comprehending gas behavior and have a variety of uses, including industrial operations, gas storage, and the investigation of atmospheric phenomena.

It's vital to keep in mind that these gas laws are based on the assumption that gases behave in an ideal way and consist of infinitely small particles that do not interact with one another. Under specific circumstances, the behavior of actual gases may differ from these idealized connections.

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A 0.563 M solution of the salt NaA has a pH of 11.56. Calculate the Ka value for the acid HA. Record your answer in scientific notation to 3 sig figs.

Answers

Answer:

\(\displaystyle K_a = 4.24\times 10^{-10}\)

Explanation:

Write the base reaction of NaA with water:

\(\displaystyle \text{A}^-_\text{(aq)}+\text{H$_2$O}_\text{($\ell$)}\rightleftharpoons \text{HA}_\text{(aq)} + \text{OH}^-_\text{(aq)}\)

Hence, the equilibrium constant expression for the reaction is:
\(\displaystyle K_b = \frac{[\text{OH}^-][\text{HA}]}{[\text{A}^-]}\)

Thus, to find Ka, we can find Kb and use the fact that Ka × Kb = Kw.

From the reaction and initial concentration of NaA, create an ICE chart:

\(\begin{tabular}{llllll} & A^- &\text{H$_2$O} & \rightleftharpoons & HA & OH^- \\I & 0.563 M & \---- & & 0 M & 0 M \\C & -\text{ $ x$} & \---- & & +\text{ $x$ M} & + \text{$x$ M} \\E & \text{(0.563 - $x$) M} & \---- & & \text{$x$ M} & \text{$x$ M} \end{tabular}\)

Find [OH⁻] from the given pH:
\(\displaystyle \begin{aligned} \text{pH} +\text{pOH} & = 14.00 \\ \\ \text{pOH} & = 14.00 - \text{pH} \\ \\ & = 14.00 - (11.56) \\ \\ & = 2.44 \\ \\ -\log[\text{OH}^-] & = 2.44 \\ \\ [\text{OH}^-] &= 10^{-2.44} \\ \\ & =0.00363 \text{ M}= 3.63\times 10^{-3} \text{ M} = x\text{ M}\end{aligned}\)

Solve for all species concentrations at equilibrium from the found x value:

\(\displaystyle [\text{HA}] = [\text{OH}^-] = 3.63\times 10^{-3} \text{ M}\)

And:

\(\displaystyle \begin{aligned} \ [\text{A}^-] & = 0.563 - 3.63\times 10^{-3} \text{ M}\\ \\ & = 0.559\text{ M}\end{aligned}\)

Find Kb:

\(\displaystyle \begin{aligned} \displaystyle K_b &= \frac{[\text{OH}^-][\text{HA}]}{[\text{A}^-]} \\ \\ & = \frac{(3.63\times 10^{-3})(3.63\times 10^{-3})}{(0.559)}\\ \\ & = 2.36\times 10^{-5}\end{aligned}\)

Find Ka:

\(\displaystyle \begin{aligned} K_a\cdot K_b & = K_w \\ \\ K_a & = \frac{K_w}{K_b} \\ \\ & = \frac{(1.00 \times 10^{-14})}{(2.36\times 10^{-5})} \\ \\ &= 4.24\times 10^{-10} \end{aligned}\)

In conclusion:
\(\displaystyle K_a = 4.24\times 10^{-10}\)

What is the theoretical amount of sodium citrate (Na3C6H5O7) produced if you react 85.0g of citric acid (H3C6H5O7) in excess amount sodium hydroxide? If you actually produced 97.3 g of sodium citrate what is the percent yield?

Answers

Answer:

i did not find the amswer sorry

CH3-CH2-CH=CH-CH3 ( MARKOVIAN'S RULE AND ANTI MARKOVIAN'S RULE)​

Answers

Answer:

Explanation:

CH3-CH2-CH=CH-CH3 is a molecule with a long carbon chain containing a double bond between the third and fourth carbon atoms. In this molecule, the first three carbon atoms (CH3-CH2-CH) form a substructure known as a propyl group, while the last two carbon atoms (CH=CH-CH3) form a substructure known as an allyl group.

When applying Markovnikov's rule to this molecule, the double bond is treated as a functional group that can react with other molecules. In this case, the double bond will react with a molecule of hydrogen to form a new carbon-hydrogen bond, with the hydrogen atom attaching to the carbon atom that already has the most hydrogens. In this molecule, the carbon atom in the propyl group has three hydrogens, while the carbon atom in the allyl group has only two hydrogens. Therefore, according to Markovnikov's rule, the hydrogen atom will react with the carbon atom in the allyl group, forming a new molecule with the following structure: CH3-CH2-CH-CH2-CH3.

Alternatively, if the reaction follows anti-Markovnikov's rule, the hydrogen atom will react with the carbon atom in the propyl group, forming a new molecule with the following structure: CH3-CH2-CH2-CH=CH3. This is the opposite of what would happen under Markovnikov's rule, as the hydrogen atom attaches to the carbon atom with the fewest hydrogens instead of the most.

Overall, Markovnikov's rule and anti-Markovnikov's rule describe how double bonds in molecules can react with other molecules to form new bonds. These rules help predict the outcome of chemical reactions involving double bonds, and are important tools in organic chemistry.

Name one major function of the organ systems listed below.
1. Skeletal System
2. Muscular System
3. Digestive System
4. Respiratory System
5. Circulatory System
6. Nervous System
7. Urinary System
Plss help I’ll give u 35 points

Answers

1. Works as a support structure for your body. Gives it shape

2.it’s main function is to allow movement

3.it’s function is digestion and absorption. Braking down food then absorbing it

4.it’s a network of organs and tissues that help you breath

5.it delivers oxygen and nutrients to cells and takes away wastes.

6.it’s to control and communicate information throughout the body.

7.to filter blood and create urine as a waste by-product

The organ system has been defined as the collective working of the organs for performing a specified task. Each organ system has been assigned a major task to be performed.

The function of the following organ systems have been:

Skeletal system: It has been comprised of bones and muscle. The major function of skeletal system has to maintain the body structure, and allow the interaction of muscular system to nervous system.

Muscular system: It has been dealing with the voluntary and involuntary muscles. The major function has been the operation of the skeletal system by following the commands from the nervous system.

Digestive system: It has been comprised of esophagus, stomach, intestine. The major function has been the breakdown of food and absorption of nutrients.

Respiratory system: The respiratory system has been comprised of lungs and trachea. It has a major function of release of harmful gases, as well as oxidation and reduction of the byproducts of glycolysis.

Circulatory system: It has been majorly comprises heart. The major function has been purification of blood and transport to different parts of the body.

Nervous system:  It has been comprised of brain and neurons, the function has been transmission of signals to the stimuli and responsible for conscious and subconscious behavior.

Urinary system: The major part has been kidneys and the nephrons. The function has been the filtration of the waste liquid and urination.

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Calculate the mass percent composition of nitrogen in each nitrogen containing compound

Answers

Mass percent of a compound=(mass of element in molecule/total mass of compound)×100  (a) 63.64%

What is mass percentage composition ?

We use the concept of mass percentage composition to explain the concentration of an element in a compound or a component in a combination. This word refers to the overall percent by mass of each element present in a compound.

In chemistry, a compound's percent composition is calculated by dividing its total amount of each elements by the compound's total amount, multiplied by 100. The following formula determines an element's percentage composition:

(gE/gT) = %CE 100

Here, %CE stands for the element's composition in percent.

How to calculate the percentage of each element by mass makes up each compound?

To get the mass percent of an element in a compound, multiply the result by 100 after dividing the mass of the element in 1 mole of the compound by the compound's molar mass.

Calculating total mass of HNO3

= 1 x 1 + 14 x 1 + 16 x 3

= 1 + 14 + 48

= 63

Calculating the mass percentage of Nitrogen in HNO3

= 1/63 x 100

= 1.586 %

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7. Write the equation for the positron emission of barium-127.

Answers

The reaction is given by

\(\\ \rm\Rrightarrow {}^{127}_{56}Ba\longrightarrow {}^{0}_{+1}\beta+{}^{127}_{55}Cs\)

Barium goes underneath beta decay to form Ceaseum

Cs is very mellable elementIt can melt on your hand

\(\sf {}^{127}_{56}Ba\longrightarrow {}^0_{1}\beta+{}^{127}_{55}Cs\)

Remember

Radioactive decays are first order reactionsThe rate constant doesn't depend upon initial concentrationIt's never ending reaction

A student accidentally let some of the vapor escape the beaker. As a result of this error, will the mass of naphthalene you record be too high, too low, or unaffected? Why?

Answers

Answer:

too low

Explanation:

If our aim is to recover the naphthalene and measure its mass after separation, then we must not allow any vapour to escape.

Naphthalene is a sublime substance, it can be separated by sublimation. It changes directly from solid to gas. This vapour must be kept securely so that none of it escapes. If part of the naphthalene vapour happens to escape accidentally, then the measured mass of naphthalene will be too low compared to the mass of naphthalene originally present in the mixture.

What is the percent of C in Ca(C2H3O2)2?
(Ca = 40.08 g/mol, C = 12.01 g/mol, H= 1.01 g/mol, O= 16.00 g/mol)
[?]% C

Answers

The percent by mass of the carbon is 30.4%.

What is the percentage of calcium?

The term percentage has to do with the ratio of the mass of a particular atom to the total mass of the compound multiplied by one hundred. Thus the first step is to find the total mass or the molar mass of the compound.

Molar mass = 40 + 2(2(12) + 3(1) + 2(16))

= 40 + 2(24 + 3 + 32)

= 40 + 2(59)

= 40 +118

= 158

Thus the mass of carbon is;

4(12)/158 * 100/1

= 30.4%

Thus carbon is only about 30.4% by mass of the compound.

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What is the molar concentration of Pb+ in a solution that contains 6.73 ppm of
Pb(NO3)2?
Answer with correct number of S.F.
(Hint: the unit of your answer is mol/L = M)
Answer:

Answers

Answer:

2.03 × 10⁻⁵ M

Explanation:

Step 1: Given data

Concentration of Pb(NO₃)₂: 6.73 ppm = 6.73 mg/L

Step 2: Convert 6.73 mg/L to mol/L

The molar mass of 331.2 g/mol.

6.73 × 10⁻³ g/L × 1 mol/331.2 g = 2.03 × 10⁻⁵ mol/L = 2.03 × 10⁻⁵ M

Step 3: Calculate the molar concentration of Pb²⁺

Let's consider the ionization of Pb(NO₃)₂.

Pb(NO₃)₂(aq) ⇒ Pb²⁺(aq) + 2 NO₃⁻(aq)

The molar ratio of Pb(NO₃)₂ to Pb²⁺ is 1:1. The molar concentration of Pb²⁺ is 1/1 × 2.03 × 10⁻⁵ M = 2.03 × 10⁻⁵ M.

Which of these compounds is most likely to contain an ionic bond?
O CaCl2
O CHA
SO2
O H2

Answers

Answer:

O CaCl₂

Explanation:

The compound most likely to contain an ionic bond is CaCl₂ because it is the only specie with a metal and non-metal.

The metal here is Ca and non-metal is Cl.

In this bond type, there is a transfer of electrons from the metal to the non-metal. There must be a significant electronegativity difference between the two bodies for this bond to form. The metal Calcium loses two electrons and becomes isoelectronic with argon. Two chlorine non-metal gain one of the electrons each and becomes stable. The electrostatic attraction between the oppositely charged ions results in the ionic bonding.

When Thomas Edison first sold electricity, he used zinc coulometers to measure charge consumption. (In a coulometer the cathode is weighed before a current is passed through it, and then again after the passage of current. The weight increase is proportional to the amount of current that flows through the cathode.) If the zinc plate in one of Edison's coulometers increased in mass by 7.85 g, how much charge had passed through it

Answers

When the zinc plate in one of Edison's coulometers increased in mass by 7.85 g, the amount of charge that had passed through it is 23,173 C.

Ionization of zinc

The zinc metal will ionize as shown below;

Zn²₊ + 2e⁻ → Zn

The molar mass of zinc metal is given as 65.38 g/mol

Amount of charge passed through 65.38 g/mol

Amount of charge that will deposite the given mass of zinc is calculated as follows;

e⁻ = 96500 C

2e⁻ = 2 x 96500 C = 193,000 C

Amount of charge passed through 7.85 g

65.38 g -------> 193,000 C

7.85 g -----------> ?

= (7.85 x 193,000)/(65.38)

= 23,173 C

Thus, when the zinc plate in one of Edison's coulometers increased in mass by 7.85 g, the amount of charge that had passed through it is 23,173 C.

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Explain how a rainbow is produced

Answers

A rainbow is produced through a proces that includes refraction, reflection, and dispersion of  sunlight.

What more should you know about the production of rainbows?

A rainbow is formed when sulinght is refracted and reflected by rain drops in the atmospher.

The sunlight is split into its component colors, which is why rainbows appear as having an array of colors. This is due to each color being bent by a different amount during refraction.

The colors of a rainbow are always in the same order, with red on the outside and violet on the inside.

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A chemist prepares a solution of mercury(I) chloride by measuring out of mercury(I) chloride into a volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's mercury(I) chloride solution. Be sure your answer has the correct number of significant digits.

Answers

The given question is incomplete. The complete question is:

A chemist prepares a solution of mercury(I) chloride \(Hg_2Cl_2\) by weighing out 0.537 mg of mercury(I) chloride into a 400. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in g/dL of the chemist's mercury(I) chloride solution. Round your answer to 3 significant digits

Answer: The concentration in g/dL of the chemist's mercury(I) chloride solution is \(1.34\times 10^{-4}\)

Explanation:

Concentration of a solution is defined as how many grams of solute in=s dissolved in a particular amount of solvent.

Given :  mass of mercury (I) chloride = 0.537 mg = \(5.37\times 10^{-4}g\)      \((1mg=0.001g)\)

Volume of solution = 400 ml = 4 dL     (1ml=0.01dL)

Thus concentration of mercury (I) chloride in g/dL is = \(\frac{5.37\times 10^{-4}g}{4dL}=1.34\times 10^{-4}g/dL\)

The concentration in g/dL of the chemist's mercury(I) chloride solution is \(1.34\times 10^{-4}\)

mass of Na2CO3 = 0.530 g
mass of CaCl2 = 0.560 g

Total Mass of these reactants?

Answers

Answer:

The total mass of reactants is 1.09g

Explanation:

You have to add up both masses together :

\(total \: mass = 0.530 + 0.560\)

\(total \: mass = 1.09g\)

How many Na atoms are there in 1.27 moles of Na?
______ atoms​

Answers

Answer:

5 atoms

Explanation:

i hope that helps

a. Derive planar density expressions for FCC(100) and (111) in terms of the atomic radius R.b. Compute and compare linear density values for these same two planes for aluminum.Consider the (100) plane inFCC in the figure below.How many atoms are centered on the [100] inFCC?

Answers

Derivate planar density expressions for FCC(100) and (111) is 1/4R² and 4R²√3, number of  atoms are centered on the [100] in FCC is 4.

Atoms can be arranged either closely or widely together. A periodic three-dimensional pattern of atoms is packed into crystalline solids like metals. Atoms are not subject to periodic packing in non-crystalline materials like silicon oxide. A unit cell is a crystal structure's fundamental building block. The packing density of crystals is measured by planar density.

For (100) plane one atom at each of  four cube corners

,each of which is shared with four adjecent unit cells.

Centre atom lies with in the unit cell.

Thus there is the equivalence of 2 atoms associated with this FCC(100) plane.

The plannar section in the above figure is square.

Where

The side lengths are equal to unit cell edge length = 2R√2

Area of the square =( 2R√2 )2

                            =8R2

a) So plannar density of (100) plane

PD (100)plane =(number of atoms centerd at (100) plane)  / (area of plane)

                    = (2) / 8R2

                    =1 / 4R2

∴Plannar density of  FCC(100) is 1 / 4R2.

b) There are 6 atoms whose centre lie on this plane .

Total  equivalence is 2 atoms associated with this FCC(111) plane at centered.

In above diagram

 (2R)2 + h2 = 4R2

which leads to h = 2R√3

Thus Area =4(R) (h) /2

                 =4(R) (2R√3) /2

                 =4R2√3

PD (111)plane =(number of atoms centerd at (111) plane)  / (area of plane)

                    =(2) / 4R2√3

                     =1/ (2R2√3)

∴Plannar density of  FCC(111) is 1/ (2R2√3).

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samples of the gases carbon dioxide =44 and hydrogen =2 ar rhe same temperature,compare the speed of the molecules in these two gases ​

Answers

Answer:

The speed of molecules in a gas is directly proportional to the square root of the temperature and inversely proportional to the square root of the molar mass.

Since both gases are at the same temperature, we only need to compare their molar masses.

The molar mass of carbon dioxide (CO2) is 44 g/mol and the molar mass of hydrogen (H2) is 2 g/mol.

Therefore, the square root of the molar mass of hydrogen is smaller than the square root of the molar mass of carbon dioxide.

This means that the speed of hydrogen molecules is greater than the speed of carbon dioxide molecules at the same temperature.

T("C) = 2
T, ("C) =
AT ("C) =
(J/g °C) = 3.77
M(9) = 340g
(J) = 10,000

what is the change in temperature? And what is the final temperature?

Answers

Answer:

1.377

Explanation:

Because we are subtract the initial from the final

why do you think they stilk proruxe bright flowers to attract bees?

why do you think they stilk proruxe bright flowers to attract bees?

Answers

Answer:

A

Explanation:

In order for plants to entice pollinators, they must first offer their favorite foods: nectar and protein. Since most pollinators fly, the colors of a flower must attract them; therefore, the brighter the flower, the more likely it will be visited. ... For instance, bees are attracted to bright blue and violet colors.

hope this helps you out...

A ) flowers need honey that bees provide in order to grow
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Combine the like terms for this problem: + 9y - 7 - 2y + 6 - The length of a side of a triangle is in the extended ratio of 3:5:7. The perimeter of the triangle is 120cm. What are the lengths of the sides? help me please ://// Please answer, thank you!EXERCISE 9.2 Question Worksheet Explain why the lymphatic system is considered an open system. How is this different from the circulatory system? 2 What is the function of the valves found in lymphati help asap pleaseBakit ipinagbabawal ng pamahalaan ang paghuli sa mga endangered na hayop? The coordinates of the endpoints of BC are B(6,13) and C(11, 2). Point D is on BC and divides it such that CD:BD is 1:4.The coordinates of the endpoints of BC are B(6,13) and C(11,2). Point D is on BC and divides it such that CD:BD is 1:4.What is the sum of the coordinates of D?Write your answer as an integer or decimal. Some researchers have conjectured that stem-pitting disease in peach-tree seedlings might be controlled with weed and soil treatment. An experiment is conducted to compare peach-tree seedling growth when the soil and weeds are treated with one of two herbicides. In a field containing 20 seedlings, 10 are randomly selected throughout the field and assigned to receive herbicide A. The remainder of the seedlings is assigned to receive herbicide B. Soil and weeds for each seedling are treated with the appropriate herbicide, and at the end of the study period, the height in centimeters is recorded for each seedling. The following results are obtained: Herbicide A = 94.5 cm s1 = 10 cm Herbicide B = 109.1 cm s2 = 9 cmWhat is a 90% confidence interval (use the conservative value for the degrees of freedom) for 2 1? a. 14.6 7.00 b. 14.6 7.38 c. 14.6 7.80 d. 14.6 9.62Suppose we wish to determine if there tends to be a difference in height for the seedlings treated with the different herbicides. To answer this question, we decide to test the hypotheses H0: 2 1 = 0, Ha: 2 1 0. What is the value of the two-sample t statistic? a. 14.6 b. 3.43 c. 2.54 d. 7.80What can we say about the value of the P-value? a. P-value < 0.01 b. 0.01 < P-value < 0.05 c. 0.05 < P-value < 0.10 d. P-value > 0.10If you use the 0.05 level of significance, what conclusion would you reach? a. The evidence is not sufficiently strong to reject the null hypothesis. b. There is sufficient evidence to reject the null hypothesis. c. Cannot be determined by the information given. Which of the following statements most accurately describes haemoglobinySelect one:a. It is a protein found in red blood cells that binds with carbon dioxideb. It is a protein found in plasma and carries oxygenC. It is another form of oxygenO d. It is a protein found in red blood cells that binds with oxygene. It is an electrolyte found in plasma Similarities and differences of Haida and Maori the gospel of luke was written to a group of primarily jewish christians who were still clinging to the old testament.TF Here are the results of a survey that students conducted at a mall. The students conducted this survey as part of a statistics project to determine if younger adults are more likely to have tattoos.At least one tattooNo tattooRow TotalsAge 18 - 29170320490Age 30 - 5060445505Column Totals230765995We randomly select a person who responded to this survey. Which calculation gives the probability that the person has a tattoo?Group of answer choices60 out of 505230 out of 765170 out of 490230 out of 995 You are the manager of a monopoly. Your analytics department estimates that a typical consumers inverse demand function for your firms product is P = 200 20Q, and your cost function is C(Q) = 80Q.a. Determine the optimal two-part strategy pricing strategy.b. How much additional profit do you earn using a two-part pricing strategy compared with charging this consumer a per-unit price? Why might food prices not be sensitive to climate change?Food is internationally tradeableFood prices depend on packaging and transportFood prices have been falling for decadesAll of the above You roll a number cube 20 times. the number 4 is rolled 8 times. what is the experimental probability of rolling a 4? a banked circular highway curve is designed for traffic moving at 60 km/h. the radius of the curve is 200 m. traffic is moving along the highway at 40 km/h on a rainy day. what is the minimum coefficient of friction between tires and road that will allow cars to take the turn without sliding off the road? (assume the cars do not have negative lift). twenty high school students took an examination and received the following scores: 70, 60, 75, 68, 85, 86, 78, 72, 82, 88, 88, 73, 74, 79, 86, 82, 90, 92, 93, 73 determine what percent of the students scored within ( ) one standard deviation of the mean 1. Cul es la instruccin afirmativa irregular de hacer What is the solution to the equation StartFraction 1 Over x EndFraction = StartFraction x + 3 Over 2 x squared EndFraction? state the zeros of the polynomial (include multiplicity): f(x) = (x+9)(x-1)(2x + 5). Design For Six Sigma is used in which of the following situations? a. Product or process does not currently exist b. Process needs C. Process improvement efforts have taken the current process to its limit d. All of the above e. a and