Molar Heat Capacity

What is the definition of molar heat capacity?

• The amount of heat required to raise the temperature of one mole of a substance by one degree Celsius.

• The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

• The amount of heat required to raise the temperature of one mole of a substance by one Kelvin.

• The amount of heat required to raise the temperature of one gram of a substance by one Kelvin.

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NGSS.HS-PS3-4

Which of the following is the formula for calculating molar heat capacity?

If the molar heat capacity of a gas is 25 J/mol·K, how much heat is required to raise the temperature of 2 moles of the gas by 10 K?

• 250 J

• 500 J

• 750 J

• 1000 J

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NGSS.HS-PS3-1

Which of the following substances is likely to have the highest molar heat capacity?

• Water

• Iron

• Copper

• Helium

In an experiment, the molar heat capacity of a liquid is found to be 75 J/mol·K. What does this imply about the liquid's ability to store heat?

• It can store a large amount of heat per mole per degree change.

• It can store a small amount of heat per mole per degree change.

• It cannot store any heat.

• It can store heat only at absolute zero.

How does the molar heat capacity of a substance change with temperature?

• It generally increases with temperature.

• It generally decreases with temperature.

• It remains constant with temperature.

• It fluctuates randomly with temperature.

Which of the following is true about the molar heat capacity of ideal gases?

• It is constant and does not depend on temperature.

• It varies significantly with temperature.

• It is zero at absolute zero temperature.

• It is infinite at absolute zero temperature.

What is the relationship between molar heat capacity and specific heat capacity?

• Molar heat capacity is specific heat capacity multiplied by molar mass.

• Molar heat capacity is specific heat capacity divided by molar mass.

• Molar heat capacity is specific heat capacity plus molar mass.

• Molar heat capacity is specific heat capacity minus molar mass.

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NGSS.HS-PS3-4

Which of the following experiments can be used to determine the molar heat capacity of a substance?

• Calorimetry experiment

• Electrolysis experiment

• Chromatography experiment

• Spectroscopy experiment

Why is molar heat capacity an important property in thermodynamics?

• It helps in understanding the energy required for phase changes.

• It determines the color of a substance.

• It is used to calculate the speed of sound in a medium.

• It is irrelevant in thermodynamics.

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