Is the something missing from the question
Clouds are made of water. When water evaporates it turns into clouds. So, I think the answer is EVAPORATED water.
Volume= Mass/ Density= 20/184
= 0.108 cubic cm
Answer: All of these answers are sorrect
ExplanationA scientist does all of these things while operforming a experiment
1- metal and non metal
2- true
3- chlorine