求问一道关于气体的化学英文题

题目

求问一道关于气体的化学英文题
Consider two gases,A and B,in separate 1.0 L containers at the same temperature and pressure.The total mass of gas A in the container is 0.25 g and the mass of gas B in the container is 0.51 g.
1.Which gas has the most molecules present?
2.Which gas has the largest average kinetic energy?
3.Which gas has the fastest average velocity?
4.How can the pressure in the two containers be equal to each other since the larger gas B molecules collide with the container walls more forcefully?

答案

1.the number of molecules are equal
2.average kinetic energy are the same
3.A has faster speed
4 Because of perfect elastic collision,and also there is more collision between the wall and gas A