Liquid :) it goes directly from a solid to a gas. Have a nice day!
Answer: i think its A diatomic compound..
Explanation: hope i helped! sorry if im wrong!
The answer is (2) 10.0 mol. The equation given is balanced. So the ratio of mol number of compound is the ratio of the number before the compound. The HCl and CO2 ratio is 2:1. So the answer is 10.0 mol.