rlsaldan
Feb 28, 2010, 05:48 PM
I'm working on chemistry homework and I don't understand how to figure this problem out.
Unknown008
Mar 1, 2010, 06:34 AM
You need to find the amount of moles of Calcium you have in 51.0 g of Calcium.
The atomic weight of Calcium is 40.
So, 40 g of calcium has 1 mole.
Find the number of moles 51 g of Calcium contains.
Then, 1 mole contains 6.02x10^23 particles, in this case, 1 mole contains 6.02x10^23 atoms.
When you have the number of moles, you can find the number of atoms! :)
Post your answer. :)