In which phase transition do molecules directly move from a state involving random movement of high-speed particles

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.

How manyatoms of mercury are in 1.4214e+1 ml sample

In which phase(s) do the molecules take the shape of the container?