Stoichiometric Chemisty Help
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Stoichiometric Chemisty Help

[From: ] [author: ] [Date: 11-11-08] [Hit: ]
0.3.4.5. 63.6.......
I need help with 1 questions on my hw. Please! and thanks!

A new ore contains 42.3% silver by mass. How
many grams of the ore are needed to obtain
12.5 moles of silver?
1. 0.274 g
2. 0.0490 g
3. 570 g
4. 3190 g
5. 63.8 g
6. 1350 g

AND if you could explain that would be great!

-
? g ore = 12.5 mole Ag x 108 g Ag/1 mole Ag x 100/42.3 = 3190 g ore
1
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