PHYS 102  - Problems – Chapter 20

1. A sample of an ideal gas containing five moles expands isothermally at 127 oC to four times its initial volume. Find (a) the work done by gas and (b) the thermal energy transferred to the system.

1. One mole of an ideal gas is heated at constant pressure so that its temperature triples. Then, the gas is heated at constant temperature so that its volume triples. Find the ratio of the work done during the isothermal process to that done during the isobaric process.

1. An ideal gas initially at 300 K undergoes an isobaric expansion at 2.50 kPa. If the volume increases from 1.00 m3 to 3.00 m3 and 12.5 kJ of thermal energy is transferred to the gas, find (a) the change in its internal energy and (b) its final temperature.

1. Calculate the change in internal energy of 3.0 moles of an ideal monatomic gas when its temperature is increased by 20 K.

1. One mole of an ideal monatomic gas has pressure P and volume V. By heating the gas, its pressure is tripled and its volume is doubled. If this heating process includes two steps, one at constant pressure and the other at constant volume, determine the amount of heat transferred to the gas.

1. One mole of an ideal monatomic gas is heated at constant pressure from 300 K to 400 K. Calculate (a) the heat transferred to the gas, (b) the increase in its internal energy, and (c) the work done by the gas.

1. Halliday & Resnick – Problem 10.

1. Halliday & Resnick – Problem 14.

1. Halliday & Resnick – Problem 45.

1. Halliday & Resnick – Problem 46.

1. Halliday & Resnick – Problem 54.