Answer with explanation:
1) general word equation=acid + metal= salt + hydrogen gas
chemical/balanced equation= 2HCl+Mg=MgCl2+H2
2)The gas thus formed is an effervescent carbon di oxide when calcium chloride reacts with hydrochloric acid. the carbon di oxide gas also acts as an extinguisher for fires. Hence the burning candle is extinguished.
Explanation:
I don't know sorry ok I have some work so I m sorry
I was taught how to do it this way and trust me it is way easier than doing the stuff with fractions. I’ll upload a photo on how to do it