Why is it that cooking gas are packaged in the metal cylinder appear to be in a liquid state rather than gaseous state while in the cylinder?

LPG needs only low pressure or refrigeration to change it into liquid from its gaseous state. As a gas, LPG expands to 270 times its volume as a liquid. Therefore, it's only logical that LPG is stored and transferred as a liquid, under pressure, in a gas bottle (e.g. propane tanks).

Explanation:

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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.