Pick your answer from:
[i] chlorofluorocarbons;
[ii] water vapor;
[iii] graptolites;
[iv] hydrogen chloride;
[v] deoxyribonucleic acid;
[vi] flow of electrons;
[vii] Calcium carbonate;
[viii] an object;
Given those answer options, answer the question: Fact 1: If gas is heated then that gas will expand. Fact 2: Hydrogen chloride is a gas. Given the two facts above, what will expand when heated?
A:
[iv]