A 0. 200 L sample of neon gas at 270 K is cooled until the volume is 0. 180 L. What is the new temperature?

The balanced equation for the hydrolysis of ammonium bromide is:

NH4Br + H2O → NH4+ + Br- + H3O+

When ammonium bromide (NH4Br) is dissolved in water, it undergoes hydrolysis, which is the reaction of a salt with water to form an acidic or basic solution.

In this equation, water acts as a base and accepts a proton from the ammonium ion (NH4+) to form the hydronium ion (H3O+). The resulting solution is acidic due to the presence of the hydronium ions.

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Answer:

She needs 1.19 moles of potassium hydroxide.

Explanation:

Being the molar mass of the elements:

then the molar mass of potassium hydroxide is:

KOH= 39 g/mole + 16 g/mole + 1 g/mole= 56 g/mole

Being the mass of one mole of a substance, which can be an element or a compound, you can apply the following rule of three: if 56 g of KOH are present in 1 mole, 66.48 g of KOH in how many moles of the compound are they?

\(moles of KOH=\frac{66.48 grams*1 mole}{56 grams}\)

moles of KOH= 1.19

She needs 1.19 moles of potassium hydroxide.

The pH of the aqueous solution can be calculated by considering the acid dissociation constants of both Nao2 and Ca(NO2)2. The acid dissociation constant of NaNO2 is negligible in comparison to the acid dissociation constant of Ca(NO2)2 which is 4.5*10-4.

The pH of the solution can be calculated using the Henderson-Hasselbalch equation which states that the pH of a solution is equal to the pKa of the acid plus the logarithm of the ratio of [Molecule]/[Conjugate base].

In this case, the pH of the solution can be calculated by taking into account the dissociation of Ca(NO2)2 in the solution. The pH of the solution is 2.43. This is because the ratio of [NaNO2]/[Ca(NO2)2] is 0.1:0.2 and the pKa of Ca(NO2)2 is 4.5*10-4. Thus, the pH of the solution is 2.43.

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The molar concentration of a solution containing 469 grams of C6H12O6 in 82 milliliters of water is 31.7M.

The number of moles = 469g ÷ 180.156g/mol = 2.6mol

Volume of water in litres = 82/1000 = 0.082L

Concentration of solution = 2.6mol ÷ 0.082L = 31.71M

Therefore, the molar concentration of a solution containing 469 grams of C6H12O6 in 82 milliliters of water is 31.7M.

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If someone accidentally leaves cracked open the top of a beer fermentation container, there is a possibility of the yeast cells breaking down in the beer and releasing some contents of cells in the beer. This process is known as autolysis.

When energy is extracted from carbohydrates in the absence of oxygen, fermentation occurs.

Fermentation also involves the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms creating sort of an effervescence leading to the generation of heat

From the question, if someone accidentally leaves cracked open the top of a beer fermentation container, there is a possibility of the yeast cells breaking down in the beer and releasing some contents of cells in the beer. This process is known as autolysis.

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Answer:

The volume will also decrease.

Explanation:

This illustration clearly indicates Boyle's law.

Boyle's law states that the volume of a fixed mass of gas is directly proportional to the absolute temperature, provided the pressure remains constant. Mathematically, it is represented as:

V & T

V = KT

K = V/T

V1/T1 = V2/T2 =... = Vn/Tn

Where:

T1 and T2 are the initial and final temperature respectively, measured in Kelvin.

V1 and V2 are the initial and final volume of the gas respectively.

From the illustration above, the volume is directly proportional to the temperature. This implies that as the temperature increases, the volume will also increase and as the temperature decreases, the volume also will decrease.

Answer:

C. Parents can pass on useful traits to offspring

Explanation:

Answer:

The Answer is C

Explanation:

Answer:

14660.75 kJ.

Explanation:

We are given from the question above that the pressure inside is represented by this equation:

P = Po + C(1-(D1/D))(D1/D).

Thus, P = 100 + C (1 - 1/4) (1/4). Therefore, P  which is = 400 is;

400 = 100 + C (1 - 1/4) (1/4).

Hence, C = 1600. And the equation can be written as P = 100 + 1600 (1 - (D1/D))(D1/D).

The work done during the entire process, w = (work done during the process 1 to 2) + (work done duringbthe process 2 to 3 ).

Therefore, work done during the process 1 to 2 = P(V2 + V1) = 100( π/6 - 0).

{NB: V2 is gotten from π/6 × D^3. Where D^3 = 1. }

Hence, work done during the process 1 to 2 = 52.36 kJ.

So, the work done duringbthe process 2 to 3 ) is going to be the integration of PdV. Where P = 100 + 1600 (1 - (D1/D))(D1/D) and dV = π/2 D^2 dD. Taking the upper and the lower limit as 4 and 1 respectively.

After the integration (kindly check attached picture for the process) the work done duringbthe process 2 to 3  = 14.61 × 10^3 kJ.  

Therefore, The work done during the entire process, w = (work done during the process 1 to 2) + (work done duringbthe process 2 to 3 ).

The work done during the entire process, w = 52.36 kJ + 14.61 × 10^3 kJ.   = 14660.75 kJ.

Answer:

Potential energy is energy that is stored in an object or substance. Gravitational potential energy is energy in an object that is held in a vertical position. Elastic potential energy is energy stored in objects that can be stretched or compressed.

Explanation:

In body= The energy was stored as chemical potential energy in specific bonds within molecules in your muscle cells, specifically ATP molecules.

In energy= Potential energy is stored energy, whereas kinetic energy is the energy of moving things.

Answer:

Potential energy is energy that is stored in an object or substance.

Explanation:

Gravitational potential energy is energy in an object that is held in a vertical position

Elastic potential energy is energy stored in objects that can be stretched or compressed.

Answer 2, 3, 2

Explanation:

Answer:

Reactants

Explanation:

methane + oxygen turns into carbon dioxide + water

This is given as;

methane + oxygen --> carbon dioxide + water

In a reaction, all the substances before the arrow (the left side of the equation), are called Reactants!

=> 0.25 M

The question is asking us to find the molarity/concentration of the acid (HCl).

We have been provided with;

12.50 mL of 0.20 M NaOH

10.0 mL of HCl

We know that molarity (M) of a solution is contained in 1 L or 1000 mL or 1000 cm³.

This means that;

0.20 M is contained in 1000 mL.

X mol is contained in 12.50 mL

\( x \: mol \: = \frac{12.50 \times 0.20}{1000} \\ = 0.0025 \: moles\)

= 0.0025 moles

These 0.0025 moles is contained in 10 mL of HCl.

To find the molarity of the acid;

0.0025 moles is contained in 10 mL

x mol is contained in 1000 mL

\(x \: mol \: = \frac{0.0025 \times 1000}{10} \\ = 0.25 \: mol\)

= 0.25 M

Therefore the Concentration of the acid (HCl) is 0.25 M

A tetrahedral stereogenic center is a specific carbon atom bonded to four different groups. Priorities can be assigned to each group bonded to a tetrahedral stereogenic center based on the Cahn–Ingold–Prelog (CIP) sequence rule.

A tetrahedral stereogenic center is a specific carbon atom bonded to four different groups. Priorities can be assigned to each group bonded to a tetrahedral stereogenic center based on the Cahn–Ingold–Prelog (CIP) sequence rule. The Cahn–Ingold–Prelog (CIP) sequence rule is based on a set of priority rules for atoms or groups of atoms that are bonded to a stereocenter. This rule assigns R and S stereochemical descriptors to each chiral center. The group with the highest atomic number is given the highest priority, and the group with the lowest atomic number is given the lowest priority.

When assigning priorities to a tetrahedral stereogenic center, the following guidelines should be followed: The group attached to the stereocenter should be assigned the highest priority, followed by the next-highest priority group, and so on. The lowest priority group should be assigned to the fourth group. According to the CIP sequence rule, the atoms or groups of atoms attached to the tetrahedral carbon atom are assigned priorities based on their atomic numbers. The group with the highest atomic number is given the highest priority, and the group with the lowest atomic number is given the lowest priority. Thus, priorities assigned to each group bonded to a tetrahedral stereogenic center are based on the Cahn–Ingold–Prelog (CIP) sequence rule.

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The balanced chemical equations are as  follows:

14. C₂H₄ + 3 O₂ -> 2CO₂ + 2H₂O

15. 2NaHCO₃ -> Na₂CO₃ + H₂O + CO₂

16. 3Cl₂ + 2NaBr -> 2NaCl + Br₂

17. 3Na₂S + 2NaCl + 3H₂O -> 5NaCl + H₂S + 3O₂

Balanced equations are equations of chemical reactions that ensure that the law of conservation of mass is true.

In a balanced equation, the number of atoms of each element on both sides of the equation is equal.

The given chemical equations are balanced as follows;

14.  Place 3, 2, and 2 before O₂, CO₂, and H₂O respectively.

C₂H₄ + 3 O₂ -> 2 CO₂ + 2 H₂O

15. Place 2 in front of NaHCO₃.

2 NaHCO₃ -> Na₂CO₃ + H₂O + CO₂

16. Place 3, 2, and 2 in front of Cl₂, NaBr, and NaCl respectively.

3Cl₂ + 2NaBr -> 2NaCl + Br₂

17. Place 3, 2, 3, 5, and 3 in front of Na₂S, NaCl, H₂O, NaCl, and O₂ respectively.

3Na₂S + 2NaCl + 3H₂O -> 5NaCl + H₂S + 3O₂

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There are strong nuclear forces between the following pairs, except for electrons and protons, which is in option b, as strong nuclear forces exist between protons and neutrons within the atomic nucleus.

The strong nuclear force is the strongest fundamental force in nature and is responsible for the stability of atomic nuclei. On the other hand, electrons and protons interact through electromagnetic forces. Electromagnetic forces involve the attraction between oppositely charged particles (electrons and protons) and the repulsion between like charges. These forces are responsible for the interactions between electrons and protons in atoms, forming the basis for chemical bonding.

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The image of (-2,-2) after a dilation by a scale factor of 2 centered at the origin is -10,-10.

Dilation is defined as a method of altering an object's or shape's size by reducing or expanding its dimensions by certain scaling parameters.

It can also be defined as the state of being stretched or swollen beyond what is usual, especially as a result of illness, overwork, or abnormal relaxation, which can cause dilatation of the heart or dilatation of the stomach.

Simply multiply by 5 because the point is at the origin.

So, -2 x 5 = -10

and -2 x 5 = -10

Thus, the image of (-2,-2) after a dilation by a scale factor of 2 centered at the origin is -10,-10.

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The amount of work done is 450.0 atm L given that a system is compressed from 50.0 L to 5.0 L at a constant pressure of 10.0 atm.

To find the amount of work done when a system is compressed from 50.0 L to 5.0 L at a constant pressure of 10.0 atm, we can use the equation:

Work = Pressure x Change in Volume

The change in volume is calculated by subtracting the initial volume from the final volume:

Change in Volume = Final Volume - Initial Volume
Change in Volume = 5.0 L - 50.0 L
Change in Volume = -45.0 L

Since the change in volume is negative (indicating compression), we can use the absolute value of the change in volume in the calculation.

Plugging in the values into the equation, we have:

Work = 10.0 atm x |-45.0 L|
Work = 10.0 atm x 45.0 L
Work = 450.0 atm L

Therefore, the amount of work done is 450.0 atm L

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In this decay reaction, 31h is decaying into 32he+. The type of radiation that must be given off is an alpha particle, which is a helium nucleus consisting of two protons and two neutrons.

Alpha is a measure of an investment’s performance relative to a benchmark or a market index. It can be a measure of how much an investment has outperformed its benchmark, or conversely, how much it has underperformed its benchmark. Alpha is often referred to as a risk-adjusted return measure, as it adjusts for the amount of risk taken on by an investor. Alpha measures the performance of a portfolio or fund manager over and above the market’s performance, and is an important metric used by investors when assessing the quality of a portfolio manager. When used in combination with other measures of performance, alpha can help evaluate the success of a portfolio manager in generating returns in excess of a benchmark.

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The question is not found here but the results of a lab experiment can be used to draw discussions and conclusions.

An experimental procedure in the lab refers to the process to validate (or reject) our working hypothesis from a given question of the natural world.

Within the laboratory, we need to collect data through experimental procedures that help us as evidence to answer the hypothesis.

In conclusion, the question is not found but the results of a lab experiment can be used to draw discussions and conclusions.

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Answer:

Evaporation

Explanation:

Water at the surface of the ocean rivers and lakes can become water vapor and move into the atmosphere with a little added energy from the Sun through a process called evaporation. Snow and ice can also become water vapor through a process called sublimation. See also why do variations in generation time exist

The mass of water, H₂O produced from the reaction is 72.06 g

We'll begin by calculating the mass of NH₄NO₃ that reacted and the mass of H₂O produced from the balanced equation.

NH₄NO₃ —> N₂O + 2H₂O

Molar mass of NH₄NO₃ = 80.03 g/mol

Mass of NH₄NO₃ from the balanced equation = 1 × 80.03 = 80.03 g

Molar mass of H₂O = 18.01 g/mol

Mass of H₂O from the balanced equation = 2 × 18.01 = 36.02 g

From the balanced equation above,

80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O

Finally, we shall determine the mass of H₂O produced by the reaction of 160.1 g of NH₄NO₃.

From the balanced equation above,

80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O.

Therefore,

160.1 g of NH₄NO₃ will react to produce = (160.1 × 36.02) / 80.03 = 72.06 g of H₂O.

Thus, the mass of water, H₂O produced from the reaction is 72.06 g

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Answer:

1.) Metals are the only substances that use metallic bonds among their atoms. While many elements are commonly known as metals, including iron, aluminum, gold, silver and nickel, metals include a variety of other elements as well. 2.) In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions.

Explanation:

3.) Metallic bonding is utilized for its conductive properties to help transfer electricity throughout a house via copper wiring.

Answer:

\(\large \boxed{\text{D.) 91 kPa}}\)

Explanation:

We can use the Ideal Gas Law — pV = nRT

Data:

V = 15.0 L

n = 0.55 mol

T = 300 K

Calculation:

\(\begin{array}{rcl}pV & =& nRT\\p \times \text{15.0 L} & = & \text{0.55 mol} \times \text{8.31 kPa$\cdot$ L$\cdot$K$^{-1}$mol$^{-1}\times$ 300 K}\\15.0p & = & \text{1370 kPa}\\p & = & \textbf{91 kPa}\end{array}\\\text{The pressure in the container is $\large \boxed{\textbf{91 kPa}}$}\)

Option (A) is correct. CaSO4 is most soluble in water rather than 1.0M CaCl2(aq.). This is according to the concept of Common ion effect and solubility.

The solubility product of CaSO4 Ksp = 3x10-5

CaSO4 is sparingly soluble in water and this equilibrium is setup between the solid and its ions in solution.

if we add 0.5M K2SO4 solution, the sulfate ion (SO4-2) is the common ion to both of them. this is the origin of the term "common ion effect". according to Lech atelier's principle , the position of equilibrium would shift in order to count what have just done.  in this case, it would tend to remove sulfate ion (SO4-2) by making extra solid calcium sulfate. hence it will less soluble and the concentration of calcium ions in the solution  will decrease. 

similarly , if we add 1.0M CaCl2, it will less soluble and the concentration of sulfate ions (SO4-2)  in the solution will decrease.

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Answer:

0.446

Explanation:

ccu =  3035.655 / 104 g x (98.9 - 33.5)  = 0.446 J / g 0 C

The experimental specific heat capacity of the copper is 0.446 J/g°C.

\Solution:

CCU =  3035.655 / 104 g x (98.9 - 33.5)

       = 0.446  J/g°C.

The method for particular heat ability, C, of a substance with mass m, is C = Q /(m ⨉ ΔT).

wherein Q is the strength added and ΔT is the exchange in temperature.

The unique heat capability is defined as the quantthe ity of heat (J) absorbed consistent with unit mass (kg) of the cloth when its temperature will increase 1 k (or 1 °C), and its units are J/(kg k) or J/(kg °C).

Particular heat is defined by the quantity of heat had to raise by the temperature of 1 gram of a substance 1 diploma CelsiuwhichC). Water has a high precise warmth, that means it takethe s more energy to boom the temperature of water as compared to different materials.

A high particular warmness of a substance means that a big quantity of warmth is required to raise the temperature of the substance. Water covers the Earth's surface and its highly unique warmth performs a completely essential position as it can soak up a whole lot of warmness without a substantial upward push inside the temperature.

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Thermal energy is a type of energy that is associated with the movement of atoms and molecules in a substance. It is also known as heat energy.

All matter is made up of atoms and molecules, and these atoms and molecules are always in motion. This motion is what gives a substance thermal energy. The faster the atoms and molecules move, the more thermal energy a substance has.

Temperature is a measure of how hot or cold a substance is, and it is directly related to the thermal energy in a substance. For example, a substance with a high temperature will have a greater amount of thermal energy than a substance with a low temperature.

Heat is the transfer of thermal energy from one substance to another. When two substances are in contact with each other, heat will flow from the substance with the higher temperature to the substance with the lower temperature, until the two substances reach the same temperature. This process is known as thermal equilibrium.

Thermal energy can be converted into other forms of energy and vice versa. For example, burning fossil fuels like coal and oil converts the stored chemical energy in the fuel into thermal energy which is then used to generate electricity.

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Hello! Sorry you weren't able to get the help you needed! Hope you have a wonderful day! :)

Noble gases in Group VIII have electron affinities that are close to zero because each atom has a stable octet and does not readily accept an electron.

Both electron affinity and electron negativity have a downward trend over time. The electron affinity is also 0 if the electron negativity is 0. Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), and Oganesson are the elements with no affinity for electrons (Og). Affinities for electrons can be zero, negative, or positive. Noble gases in Group VIII have electron affinities that are close to zero because each atom has a stable octet and does not readily accept an electron. There is no tendency for noble or inert gases to gain an electron. Its electron affinity is therefore zero.

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The volume of the solution in mL needed to deliver 0.078 moles of glucose to the patient is 250mL.

The volume of a solution can be calculated by using the following formula:

Molarity = n/V

Where;

According to this question, an intravenous solution is noted as having a concentration of glucose equal to 0.312 M. The volume that will be needed is as follows:

volume = 0.078 moles ÷ 0.312M

volume = 0.25L = 250mL

Therefore, the volume of the solution in mL needed to deliver 0.078 moles of glucose to the patient is 250mL.

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Answer:

only 2.5% is fresh water on earth

Answer:

The answer is 3%

Explanation: