An ideal monatomic gas with an initial pressure of 1.0×105Pa and an initial volume of 0.020m3 is maintained at a constant temperature of 300K while it slowly expands to a final volume of 0.050m3. The universal gas constant has value R=8.31Jmol−1K−1.
(a) Calculate the number of moles of gas present before the expansion.
(b) Determine the magnitude of the work done by the gas during the isothermal expansion.
(c) Determine the change in internal energy of the gas for the entire process.
(d) Using your results, calculate the energy transferred to or from the gas by heating and state clearly whether the gas absorbs or releases energy.