Use the chemical equation to answer the question.
2HCl(ag) + Zn(s) → ZnCl2(aq) + H2(g)
The molar mass of hydrogen (H) is 1g/mol, the molar mass of chlorine (Cl) is 35g/mol, and the molar mass of zinc (Zn) is 65g/mol. When 130g of zinc react completely in hydrochloric acid (HCl), how much is the total mass of the products?
(1 point)
Responses
130g
130g
144g
144g
274g
274g
270g
274g
First, calculate the molar mass of ZnCl2:
Zn: 65g/mol
Cl: 35g/mol
ZnCl2: 65g/mol + 2(35g/mol) = 135g/mol
Next, calculate the molar mass of H2:
H2: 2(1g/mol) = 2g/mol
For every 130g of Zn reacting, 65g of ZnCl2 and 2g of H2 are produced. Therefore, the total mass of the products is 130g (Zn) + 135g (ZnCl2) + 2g (H2) = 274g.