1. 5.75 x 10^24 atoms Al
2. 3.75 x 10^24 molecules CO2
3. 3.58 x 10^23 formula units ZnCl2
4. 2.50 x 10^20 atoms Fe
2007-01-31 12:53:05 · 4 answers · asked by User84 4 in Science & Mathematics ➔ Chemistry
atoms to moles- divide by 6.02 x 10^23
moles to atoms- multiply by 6.02 x 10^23
with formula units, also divide by 6.02 x 10^23 to get to moles.
Example:
3) 3.58 x 10^23 formula units ZnCl2
3.58 x 10^23/6.02 x 10^23=0.595 mol ZnCl2
[i actually did this same problem for homework recently]
2007-01-31 13:41:13 · answer #1 · answered by Megan U 2 · 0⤊ 0⤋
If you are asking how many moles you have in these four cases, all you have to do is divide by 6.02 x 10^23 and you have your answers.
2007-01-31 21:13:54 · answer #2 · answered by Alan Turing 5 · 0⤊ 0⤋
Divide each of these by 6.022*10^23 and that will be your answer
2007-01-31 21:16:28 · answer #3 · answered by ceci_*220* 2 · 1⤊ 0⤋
Why did you call this Mole Problems? I thought you had problems with those furry digging creatures.
2007-01-31 21:05:31 · answer #4 · answered by prioroftheori 3 · 0⤊ 1⤋