A mixture containing Ne and Ar in a vessel at has a total translational kinetic energy =

CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

A mixture containing Ne and Ar in a vessel at

250\text{ K}

has a total translational kinetic energy =

3\text{ kJ}

. The total mass of mixture is

30\text{ g}

. What is the mass % of Ar in mixture ? (1) 28.3 (2) 71.7 (3) 50.3 (4) 30.2