TS EAMCET Medical 2017 Paper

A metal jar has a gas of volume 10−3m3 at a pressure of 2 × 105 Pa and temperature 400K. The jar has small hole and hence the gas leaks into atmosphere. The pressure and temperature of atmosphere is 105 Pa and 300K respectively. If R is the gas constant, the number of moles of the gas that has leaked into atmosphere is