Question

At a certain temperature and total pressure of 1 atm a2 vapours contains 20% by volume of a atoms

Answer 1

Explanation:

Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force. The greater the mass of a body, the smaller the change produced by an applied force.