Which describes the polarity in a water molecule?
O partial negative charge on the oxygen atom because its electrons are pulled toward the hydrogen aton
O partial negative charge on the oxygen atom because it pulls electrons from the hydrogen atoms
O partial positive charge on the oxygen atom because it pulls electrons from the hydrogen atoms
O partial positive charge on the oxygen atom because its electrons are pulled toward the hydrogen atom

The compounds that, when dissolved in water, will produce an acidic solution are Y and Z.

What is an acidic solution?

Acidic solution refers to a solution in which the concentration of hydrogen ions (H+) is greater than the concentration of hydroxide ions (OH).

The measure of the concentration of hydrogen ions is known as the pH of the solution. pH less than 7 is acidic, and pH greater than 7 is basic.

When dissolved in water, which of the following compounds will produce an acidic solution?

Y and Z, when dissolved in water, will produce an acidic solution.

What are the names of these compounds?

CH3NH3Cl (methylammonium chloride) and NaHSO4 (sodium hydrogen sulfate) are the names of the compounds that, when dissolved in water, produce an acidic solution.

How do you classify compounds?

Ionic compounds are classified as acids, bases, or salts. In an aqueous solution, these compounds dissolve and produce an acidic or basic pH, which is measured on the pH scale.

The acidic and basic properties of these compounds are determined by the concentration of hydrogen ions (H+) or hydroxide ions (OH-) produced when they dissolve in water.

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To successfully synthesize the product, use the reagents and conditions listed above, that include Hcl, H2O,[2] H2O h [1] CH3CO2H NaOE, LiAlH4, and LDA.

Everything that is needed would be to establish a connection or to put things together. Inside an effort to help others link disparate ideas, we naturally blend knowledge. Synthesis occurs, for instance, when you discuss with a friend what various friends have said about a piece of music or a movie.

Synthesis is the process of combining different elements to create a whole. When instructing students to produce a literature search or any work that calls for the utilization of numerous sources, writing instructors frequently use this term.

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The rate increases by a factor of 4.  IF the rate of the reaction  concentration of both 1-bromo butane and sodium hydroxide were doubled

What is meant by rate of reaction?

The rate of reaction refers to the speed at which the products are formed from the reactants in a chemical reaction.The reaction rate or rate of reaction is that the speed at which a chemical reaction takes place, defined as proportional to the rise in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time. Reaction rates can vary dramatically

Why is rate of reaction important?

The rate of a reaction is a powerful diagnostic tool. By checking out how fast products are made and what causes reactions to slow down we can develop methods to improve production. This information is important for the large scale manufacture of many chemicals including fertilizers, drugs and household cleaning items.

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Answer:

7.5275 x 10^21

Explanation:

Answer:

\(\boxed {\boxed {\sf 3 \times 10^{21} \ atoms \ Hg}}\)

Explanation:

We are asked to find how many atoms are in 1 gram of mercury.

First, we convert grams to moles. We use the molar mass or the mass of 1 mole of a substance. These values are equivalent to the atomic masses on the Periodic Table, but the units are grams per mole instead of atomic mass units.

Look up mercury's molar mass.

We convert using dimensional analysis, so we create a ratio using the molar mass.

\(\frac { 200.59 \ g \ Hg}{ 1 \ mol \ Hg}\)

We are converting 1 gram of mercury to moles, so we multiply the ratio by this value.

\(1 \ g \ Hg *\frac { 200.59 \ g \ Hg}{ 1 \ mol \ Hg}\)

Flip the ratio so the units of grams of mercury cancel out.

\(1 \ g \ Hg *\frac{ 1 \ mol \ Hg} { 200.59 \ g \ Hg}\)

\(1 *\frac{ 1 \ mol \ Hg} { 200.59}\)

\(\frac{ 1} { 200.59} \ mol \ Hg\)

\(0.004985293385 \ mol \ Hg\)

Next, we convert moles to atoms. We use Avogadro's Number or 6.022 × 10²³. This is the number of particles (atoms, molecules, formula units) in 1 mole of a substance. In this case, the particles are atoms of mercury.

We will use dimensional analysis and set up another ratio.

\(\frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 \ mol \ Hg}\)

Multiply by the number of moles we calculated.

\(0.004985293385 \ mol \ Hg * \frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 \ mol \ Hg}\)

The units of moles of mercury cancel.

\(0.004985293385 * \frac {6.022 \times 10^{23} \ atoms \ Hg}{ 1 }\)

\(3.00214368 \times 10^{21} \ atoms \ Hg\)

The original measurement of grams has 1 significant figures, so our answer must have the same. For the number we calculated, that is the ones place. The 0 in the tenths place tells us to leave the 3 in the ones place.

\(3 \times 10^{21} \ atoms \ Hg\)

There are approximately 3×10²¹ atoms of mercury in 1 gram of mercury.

Answer:

Để trung hoà 50 ml hỗn hợp X gồm HCl và H2SO4 cần dùng 20 ml dung dịch NaOH 0,3M. Cô cạn dung dịch sau khi trung hoà thu được 0,381 gam muối khan. a) Xác định nồng độ mol của các axit trong X. b) Tính pH của dung dịch X.

Answer:

17.18

Explanation:

(1 in = 2.54 cm; 12 in = 1 ft)

Formula:- Divide the length value by 30.48

523.7 ÷ 30.48 = 17.181

Thus, The answer is 17.181

-TheUnknownScientist

Answer:

17.18

Explanation:

I hope its helpful......

Answer:

Thomson's results showed that atoms contain smaller particles, so Dalton's theory had to be modified. Rutherford's results showed that most of an atom is empty space and that the mass is concentrated in the center of the atom.

Explanation:

( like and follow if it helps >W< )

Answer:

Explanation:

Cu(s) + 2Ag+  ======> Cu^(2+) + Ag(s)

Notice what happened. Silver started out as an ion. It took on 2 electrons that were donated by the copper.

The silver then became a solid ppte. This equation wil take on much more meaning when you take up oxidation and reduction. Until then, you need only know who gave up elections and who took them up.

Answer:

The boiling point of NaBr is higher than that of Na2S

Explanation:

Bromine has higher electronegativity as compared to the sulphur. The ionic strength of the bond formed with Sodium is higher in the NaBr compound. The higher the ionic bond strength the higher will be the boiling point

Also the size of bromine is large as compared to that of sulphur. Large molecules consists of more electron and hence they create der Waals attractive forces due to which the boiling point of compound increases.

Hence, the boiling point of NaBr is higher than that of Na2S

Answer:

According to the law of conservation of mass, the mass of the reactants must be equal to the mass of the products

Explanation:

law of conservation of mass

To convert the temperature from Fahrenheit (°F) to Celsius (°C), we can use the following formula:

How much heat is required to convert solid ice with a mass of 965 g and at a temperature of -18.5 degree Celsius to liquid water at a temperature of 72.0 degree Celsius? (The specific heat of ice is 2

If 20 g of steam at 100 degrees Celsius interact thermally with 140 g of ice at 0 degrees Celsius. What is the final temperature?

What is the number of grams of steam at 100 degrees C that will condense as 5 g of ice at 0 degrees C melts?The material that has the lowest temperature most of us are likely to encounter is dry ice, - 79.0 degrees C. What would its temperature be on the Fahrenheit scale? How much heat is required to convert 13.0 g of ice at -8.00 degrees Celsius to steam at 100.0 degrees Celsius?What mass of ice at -15 degrees C must be added to 60 g of steam at 120 degrees C to end up with water at 40 degrees C?How much heat is required to convert solid ice with a mass of 625 g and at a temperature of -28.5 degree Celsius to liquid water at a temperature of 73.0 degree Celsius? (The specific heat of ice is c What is the temperature of ice right after it is formed by freezing water how much heat is required to convert solid ice with a mass of 625 g and at a temperature of -11.5 \degree C to liquid water at a temperature of 53.5How much heat is required to convert solid ice with a mass of 695 g and at a temperature of -21.5 degree C to liquid water at a temperature of 47.5 degree C? (The specific heat of ice is c_{ice} = 210


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14. B) sucrose is not a complex carbohydrate.  A complex carbohydrate is a type of carbohydrate that consists of long chains of sugar molecules. These molecules are known as polysaccharides and are made up of many monosaccharides.

Starch, glycogen, and cellulose are examples of complex carbohydrates. Sucrose, on the other hand, is a disaccharide and is made up of two monosaccharides. Sucrose is also known as table sugar. 12. D) an ester is the functional group that is formed during the formation of fat. A fat is formed when three fatty acid molecules react with a glycerol molecule. The reaction forms an ester linkage between the fatty acid molecules and the glycerol molecule. This linkage is known as an ester bond.

3. E) none of the above can contribute to the denaturing of a protein. Denaturation is the process by which a protein loses its shape and function. Changes in temperature, concentration, pH, and the use of detergents or soaps can all contribute to the denaturation of a protein. Therefore, none of the options provided can NOT contribute to the denaturing of a protein.

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Answer:

the answer is D

Explanation:

A)1.75×3 moles of carbon monoxide

B)2:3

A)each mole of ferric oxide requires 3 moles of carbon monoxide. Therefore 1.75 moles requires 1.75 ×3 moles of carbon monoxide

Answer:no idea

Explanation:

I js needed points

Salt X is 0.05 M (molar concentration) soluble at 25°C.

To calculate the solubility of salt X at 25°C, we need to determine the amount of salt that dissolves in a given volume of solution. In this case, we have a saturated solution containing 0.28 g of salt X in 100 cm³ of solution.

The solubility is defined as the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature. Therefore, the solubility of salt X is given by the ratio of the mass of the solute (0.28 g) to the volume of the solution (100 cm³).

Solubility = Mass of solute / Volume of solution

Solubility = 0.28 g / 100 cm³

Since the solubility is expressed in grams per cubic centimeter (g/cm³), we can directly use the given values.

Solubility of salt X = 0.28 g / 100 cm³

To determine the solubility in mol/L (Molar concentration), we need to convert the mass of the solute to moles. The molar mass of salt X is given as 56 g/mol.

Number of moles = Mass / Molar mass

Number of moles = 0.28 g / 56 g/mol

Number of moles = 0.005 mol

Now, we can calculate the solubility in mol/L (M).

Solubility = Number of moles / Volume of solution (in L)

Solubility = 0.005 mol / 0.1 L

Solubility = 0.05 M

Therefore, the solubility of salt X at 25°C is 0.05 M (molar concentration).

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1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ is the electronic configuration of Cr. the correct answer is D.

There are 24 electrons in all, according to the electron arrangement. A neutral atom will contain 24 protons if it has 24 electrons. The element is determined by its proton count. Chromium, symbol Cr, is the 24th element.

Since Cr contains 24 protons and the +2 charge would result in the nucleus having 26 protons, Cr²⁺ is invalid.  Cu is made up of 29 protons. The copper would be Cu⁵⁺ as there are only 24 electrons. Cu²⁺ was rejected for the same reason.

Therefore, 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ is the electronic configuration of Cr.

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Answer:

2

Explanation:

The standard cell potential of a galvanic cell can be calculated by subtracting the standard half-cell potential of the reaction that occurs at the cathode from the standard half-cell potential of the reaction that occurs at the anode. This calculation gives us the value of E°cell, which represents the electrical potential difference between the two half-cells.

To calculate E°cell, follow these steps:

1. Identify the anode and cathode reactions: In a galvanic cell, oxidation occurs at the anode, while reduction occurs at the cathode. Identify the half-cell reactions taking place at each electrode.

2. Look up the standard half-cell potentials: Each half-cell reaction has a standard half-cell potential, denoted by E°. These values can be found in reference tables or textbooks. The standard half-cell potential represents the tendency of a half-reaction to gain or lose electrons.

3. Assign signs to the potentials: The anode reaction is an oxidation reaction, so its potential will have a negative sign. The cathode reaction is a reduction reaction, so its potential will have a positive sign.

4. Subtract the cathode potential from the anode potential: Take the absolute value of the cathode potential and subtract it from the anode potential. This will give you the standard cell potential, E°cell.

For example, let's consider a galvanic cell with a zinc anode and a copper cathode. The anode reaction is Zn(s) → Zn2+(aq) + 2e-, with a standard potential of -0.76 V. The cathode reaction is Cu2+(aq) + 2e- → Cu(s), with a standard potential of +0.34 V. Subtracting the cathode potential from the anode potential gives us -0.76 V - (+0.34 V) = -1.10 V for E°cell.

In summary, the standard cell potential of a galvanic cell can be calculated by subtracting the standard half-cell potential of the cathode reaction from the standard half-cell potential of the anode reaction. This calculation allows us to determine the electrical potential difference between the two half-cells, represented by E°cell.

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The equilibrium constant can be calculated using the relationship ΔGo = -RTln(K), where R is the gas constant and T is the temperature in kelvin. By rearranging this equation, we can solve for K. The correct answer is 6.82 × 10^4.

To explain this further, ΔGo represents the standard free energy change of a reaction, which is a measure of the molecular amount of useful work that can be obtained from the reaction. If ΔGo is negative, then the reaction is exergonic and will proceed spontaneously in the forward direction. K is the equilibrium constant, which is a measure of the ratio of the concentrations of the products to the concentrations of the reactants at equilibrium. A larger value of K indicates that the products are favored at equilibrium, while a smaller value of K indicates that the reactants are favored. The relationship between ΔGo and K allows us to determine the equilibrium constant of a reaction based on its free energy change.

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Answer:

That should be crucible tong

Answer:

litre.50000665432158900643212lo

The energy change associated with the transition from n = 2 to n = 5 in a hydrogen atom is determined using the formula:ΔE = -RH [(1/nf²) - (1/ni²)]where RH is the Rydberg constant, nf is the final energy level (n = 5), and ni is the initial energy level (n = 2).

The Rydberg constant (RH) is a fundamental physical constant relating to the electromagnetic spectra of atomic hydrogen, or the spectrum of a one-electron ion.

The Rydberg constant is defined as the wave number of the first spectral line of atomic hydrogen, i.e., 1.09678 × 107 m-1. Substituting the values into the formula: ΔE = -RH [(1/5²) - (1/2²)]ΔE = -2.179 × 10^-18 J = -13.6 eV.

Therefore, the energy change associated with the transition from n = 2 to n = 5 in a hydrogen atom is -2.179 × 10^-18 Joules or -13.6 electron-volts. This energy corresponds to the energy of the photon that is emitted or absorbed during the transition between the two energy levels.

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Answer:

See the answer below

Explanation:

The flow rate of a liquid/gas in a pipe is a quantity that measures the amount of liquid/gas that flows through the pipe at a given time.

In order to determine the speed of flow, the cross-sectional area of the pipe must be known because:

speed of flow = flow rate/cross-sectional area

Hence, if the flow rate of water in a pipe is 2L/s without specifying the cross-sectional area of the pipe, it says nothing about how fast the water is moving through the pipe.

It says nothing about how fast the water is moving through the pipe.

In order to determine the speed of flow, the cross-sectional area of the pipe must be known.

\(speed\ of\ flow =\frac{flow\ rate}{cross-sectional area}\)

Hence, if the flow rate of water in a pipe is 2L/s without specifying the cross-sectional area of the pipe, it says nothing about how fast the water is moving through the pipe.

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Answer:

I believe it is platinum

Explanation:

I think it is, haha

Answer:

zinc

Explanation:

kwkejnrkewnrkwe

The correct nuclear equation for 24195Am's alpha decay is a, as it involves a nucleus releasing an alpha particle, transforming into a different nucleus. Other options represent beta, electron, and neutron decays. Correct answer is a. 241 95 Am yields 4 2 He + 237 93 Np

The nuclear equation for the alpha decay of 24195Am is a. 24195Am yields 42He + 23793Np. This is because alpha decay is a type of radioactive decay in which a nucleus releases an alpha particle (a helium nucleus) and thereby transforms (or decays) into a different nucleus. The mass number of the parent nucleus decreases by four and the atomic number decreases by two when an alpha particle is emitted.

To balance the equation, the mass and atomic numbers of the products must add up to the mass and atomic numbers of the reactant. Therefore, the correct nuclear equation for the alpha decay of 24195Am is:24195Am → 42He + 23793Np

(a)The other options (b-e) represent different types of nuclear decay, such as beta decay (b, d), electron capture

(c), and neutron capture

(e). Beta decay involves the emission of a beta particle (an electron or positron), while electron capture involves the absorption of an electron by a nucleus. Neutron capture involves the absorption of a neutron by a nucleus, while alpha decay involves the emission of an alpha particle (a helium nucleus).Therefore, the correct answer is option a.

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Answer:

Group 17/VIIA

Highly reactive

7 electrons in their outer shell

They become stable and have noble gas configurations when they gain one more electron from metal

Explanation:

halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts).

Due to their high effective nuclear charge, halogens are highly electronegative. Therefore, they are highly reactive and can gain an electron through reaction with other elements.

Halogens are very reactive because they have seven valence electrons and need one more to have eight valence electrons (an octet). They react with metals and other halogens to get an octet. When this happens, the atoms become stable and have noble gas configurations.

The correct increasing order of solubility for the given gases is: NH₃ < N₂ < CO₂

A chemical's solubility is the maximum amount of that substance that will dissolve in a specific amount of solvent at a specific temperature. Solubility has several practical applications, including water filtering, beverage manufacturing, and vitamin storage.

The ability of a medicine to dissolve is essential to its effectiveness. A drug substance could be absorbed without it, which results in limited bioavailability. Drugs with poor solubility can potentially cause problems with metabolism or permeability, interaction with other medications, or the requirement for prolonged drug release.

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