A. the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature
B. the sum of partial pressure of mixture of two gases is sum of the two
C. product of the gas constant and the molecular weight of an ideal gas is constant
D. gases have two values of specific heat
E. all systems can be regarded as closed systems
Correct Answer: the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature ✔
Last Updated: January 26, 2019