Answer:
Explanation:
I don’t have calculator rn. So the answers u need to plug into the calculator by ur self.
7a) Mg has molar mass of 24.30g/mol
H=1.008g/mol
O=16.00g/mol
Total molar mass of Mg(OH)2= 24.30+(1.008+16.00)x2
b)41.3g/(the answer u got in a)
C)use number of moles u got in b times 6.02x10^23
8)got number of ones in 3.2x10^21 atoms of iron. 3.2x10^21/6.02x10^23
Then use mole u got times the molar mass of fe which is 55.45 g/mol to get the final answer
