22. The First Law of Thermodynamics

Heat Equations for Special Processes & Molar Specific Heats

22. The First Law of Thermodynamics

# Heat Equations for Special Processes & Molar Specific Heats - Video Tutorials & Practice Problems

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## Heat Equations for Isobaric & Isovolumetric Processes

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2

Problem

ProblemHow much heat energy is needed to increase the temperature of 5 mol of an ideal diatomic gas by from 273K to 300K if the a) pressure is held constant; b) the volume is held constant?

A

a) 3928 J

b) 2806 J

B

a) 3928 J

b) 1683 J

C

a) 135 J

b) 135 J

D

a) 3.97 × 10^{4} J

b) 4.36 × 10^{4} J

3

example

## Calculating Temperature Changes

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PRACTICE PROBLEMS AND ACTIVITIES (24)

- CALC The temperature of 0.150 mol of an ideal gas is held constant at 77.0°C while its volume is reduced to 25...
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- A cylinder contains 0.100 mol of an ideal monatomic gas. Initially the gas is at 1.00 * 10^5 Pa and occupies a...
- A cylinder contains 0.100 mol of an ideal monatomic gas. Initially the gas is at 1.00 * 10^5 Pa and occupies a...
- On a warm summer day, a large mass of air (atmospheric pressure 1.01 * 10^5 Pa) is heated by the ground to 26....
- A player bounces a basketball on the floor, compressing it to 80.0% of its original volume. The air (assume it...
- The engine of a Ferrari F355 F1 sports car takes in air at 20.0°C and 1.00 atm and compresses it adiabatically...
- A monatomic ideal gas that is initially at 1.50 * 10^5 Pa and has a volume of 0.0800 m^3 is compressed adiabat...
- A monatomic ideal gas that is initially at 1.50 * 10^5 Pa and has a volume of 0.0800 m^3 is compressed adiabat...
- Five moles of monatomic ideal gas have initial pressure 2.50 * 10^3 Pa and initial volume 2.10 m^3 . While und...
- During an isothermal compression of an ideal gas, 410 J of heat must be removed from the gas to maintain const...
- Two cars collide head-on while each is traveling at 80 km/h. Suppose all their kinetic energy is transformed i...
- What is the maximum mass of ethyl alcohol you could boil with 1000 J of heat, starting from 20°C?
- 5.0 g of nitrogen gas at 20°C and an initial pressure of 3.0 atm undergo an isobaric expansion until the volum...
- 5.0 g of nitrogen gas at 20°C and an initial pressure of 3.0 atm undergo an isobaric expansion until the volum...
- 5.0 g of nitrogen gas at 20°C and an initial pressure of 3.0 atm undergo an isobaric expansion until the volum...
- FIGURE CP19.80 shows a thermodynamic process followed by 0.015 mol of hydrogen. How much heat energy is transf...
- An ideal-gas process is described by p=cV^ /2, where c is a constant. a.Find an expression for the work done ...
- n moles of an ideal gas at temperature T1 and volume V1 expand isothermally until the volume has doubled. In t...
- n moles of an ideal gas at temperature T1 and volume V1 expand isothermally until the volume has doubled. In t...
- n moles of an ideal gas at temperature T1 and volume V1 expand isothermally until the volume has doubled. In t...
- An ideal-gas process is described by p=cV^ /2, where c is a constant. b. 0.033 mol of gas at an initial tempe...
- n₁ moles of a monatomic gas and n₂ moles of a diatomic gas are mixed together in a container. a. Derive an ex...