I have to go to work this weekend so I'm trying to get my homework finished. Could you please help me figure out this question?

Question

Calculate the mass of 1.00 mol of each of these substances:
a.) silicon dioxide (SiO2)
b.) diatomic nitrogen (N2)
c.) iron (|||) hydroxide (Fe(OH)3)
d.) copper (Cu)

Answer 1

a.) 102
b.) 64
c.) 198
d.) 34

Please check them

Answer 2

How do you figure it out? That's what I'm asking.