2006-12-28 09:39:29 · 8 answers · asked by arreis08 1 in Science & Mathematics ➔ Chemistry
it is very simple
10.6043
2006-12-28 11:04:41 · answer #1 · answered by ibrar 4 · 2⤊ 0⤋
GCSE CHEMISTRY Revision Questions - Moles - Mass - Grams - Volume ...18, What is the Mass of one Mole of Calcium Carbonate? ... 21, How many Moles are there in 35 grams of Calcium Carbonate? ...
www.gcsescience.com/m31.htm - 40k - Cached - Similar pages
Hope that gives you an idea. Good luck!
2006-12-28 17:43:27 · answer #2 · answered by Faerie loue 5 · 0⤊ 0⤋
Find out Calcium's atomic mass - if you don't have that in a textbook, search "Calcium atomic mass" in google.
Oh, all right, it's 40.078.
A mole is simply the atomic mass in grams, in this case, 40.078 grams. (Molarity was invented by chemists to give them a way of always using roughly the same amount of molecules. This is useful for calculating reaction mechanisms, etc.)
You have 425g and a mole of calcium is 40g (close enough). Divide the mass given by the molar mass, ie. divide 425g by 40g.
You have 10.6 moles.
2006-12-28 17:49:29 · answer #3 · answered by Helen B 3 · 0⤊ 0⤋
10.6 Moles of calcium in 425 grams of metalic calcium.
The computation is (425g) / (40.08 g/mol)
2006-12-28 17:43:38 · answer #4 · answered by James H 5 · 0⤊ 0⤋
Since I will be late for work if I run through the formula, here is the information you will need to get your accurate answer:
http://www.sciencebyjones.com/moles_in_review.htm
Good Luck!
Happy New Year
2006-12-28 17:46:29 · answer #5 · answered by Stuart S 2 · 0⤊ 0⤋
do moles = mass over
molar mass of element
2006-12-28 17:43:38 · answer #6 · answered by angel<3 1 · 0⤊ 0⤋
You people scare me!
2006-12-28 17:46:13 · answer #7 · answered by appsptspcl 4 · 0⤊ 0⤋
10.6043
2006-12-29 01:27:14 · answer #8 · answered by Anonymous · 0⤊ 0⤋