Answer:
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The 13 elements that are room temperature gases are radon (Rn), xenon (Xe), krypton (Kr), argon (Ar), chlorine (Cl), neon (Ne), fluorine (F), oxygen (O), nitrogen (N), helium (He) and hydrogen (H). Most non-metals in the periodic table have a gaseous elemental form.
Pic C goes in box A
Pic A goes in box B
Pic B goes in box C
The enzyme becomes denatured when this occurs.
