The pressure of an enclosed gas depends on:

the number of molecules in a unit volume and their average kinetic energy
its chemical composition
the altitude about sea level
the number of atoms per molecule
all of the above

your answer would be “dry”

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.