the mass of copper sulfate crystal is 8.36g. how many moles of CuSO4 are in the crystal

Question

anonymous · Answer

You're converting from grams to moles.
You are given 8.36 g of CuSO4 and you need MOLES of CuSO4, so.. You will need a molar mass conversion factor.
To find the molar mass of CuSO4, you need to look at the atomic mass of each element on the periodic table and add them together. 
Cu (63.5) + S (32.1) + O (16 x 4) = 160 g. (rounded to 3 significant figures)

Now that you have the molar mass, here is the procedure you will need to solve:
8.36 g CuSO4 x 1 mole CuSO4/160 g. CuSO4 =

As you can see, the grams will cross out and you will be left with moles of CuSO4
I hope this helps.

anonymous · Answer

omg, thank you. i totally forgot how to figure this out and now i remember. It did help, thanks!

anonymous · Answer

Yay :D Glad I could help ^ ^