At constant temperature and pressure, if 0.4 mole of a gas A

Last updated: 7/31/2022

At constant temperature and pressure, if 0.4 mole of a gas A occupies 220 mL and x mole of B gas occupies 120 mL, what is the number of moles of gas in the container that holds them B? 0.29 mol 0.22 mol 22.8 mol 2.2 mol