Chemistry help! ASAP

Part 1
One reaction that produces hydrogen gas can
be represented by the unbalanced chemical
equation
Mg(s) + HCl(aq)−→MgCl2(aq) + H2(g)

What mass of HCl is consumed by the reac-
tion of 4.63 mol of magnesium?
Answer in units of g

part 2
What mass of MgCl2
is produced?
Answer in units of g

3
What mass of H2
is produced?
Answer in units of g

They will be to 3 significant figures.
1. Balance
Mg(s) + 2HCl(aq)−→MgCl2(aq) + H2(g)

Mole ratio Mg to HCl is 1:2,
4.63 x 2 = 9.26 moles HCl
9.26 mol x 36.5g/1 mol HCl = 338g HCl

2. Mole ratio Mg to MgCl2 is 1:1
4.63 moles Mg = 4.63 moles MgCl2
4.63 mol MgCl2 x 95.2g/mol = 441g MgCl2

3. Mg to H2 mole ratio 1:1
4.63 mol H2 x 2.015g/mol = 9.33g H2