Question

Calcium reacts with hydrochloric acid,HCI, to make calcium chloride and hydrogen gas (H2).

Answer 1

Answer:

1.)calcium+hydrochloric acid -->calcium chloride +hydrogen

2.)Ca + 2HCl -->CaCl2 + H2

3.)3.55g

Explanation:

1.) pretty self explanatory

2.)Ca + HCl -->CaCl2 + H2

then balance

Ca + 2HCl -->CaCl2 + H2 (+2 infront of Hcl)

3.) take calcium and calcium chloride

Ca  + CaCl2

then you need the relative atomic mass of both

Ca=40

CaCl2=71 (40+(35.5x2))

Ca=40  40/40=1 1x2=2g

Then repeat that exact equation for calcium chloride

CaCl2=71 71/40=1.775 1.775x3=3.55g