2.2 g of nitrous oxide (N O) gas is cooled at a constant pressure of 1 atm from 310 K to 270 K causi — Thermodynamics and Thermochemistry Chemistry Question

Question

2.2 g of nitrous oxide (N O) gas is cooled at a constant pressure of 1 atm from 310 K to 270 K causing the compression of the gas from 217.1 mL to 167.75 mL. The change in internal energy of the process, ∆U is ‘–x’ J. The value of ‘x’ is _____. [Nearest integer] (Given: atomic mass of N = 14 g mol and of O = 16 g mol . Molar heat capacity of N O is 100 J K mol ) 2 –1 –1 2 –1 –1