what is the formula weight for CuSO4 5H2O?

Answer 1

Look up each element and add multiples of their atomic weights. What do you get?

For example, CaCl2 has weight 40.08+2(35.45) = 110.98

Answer 2

I got the answer of 249.6

Is that correct? Thanks for your help!

Answer 3

That's what I got. Nice work.