Log in

View Full Version : Calculating the amount of atoms

brando23
Oct 10, 2008, 04:59 PM
How many atoms of oxygen are a formula unit of the mineral leadhillite Pb4SO4(CO3)2(OH)2?
Unknown008
Oct 11, 2008, 03:21 AM
Count 'em!

1st in SO4
2nd in (CO3)2
Then in (OH)2

Add them up. The number outside the brakets apply to alll that are in the brakets.

Hope it helped, rate my answer, if you don't mind:)