Chemistry Help?!?

Posted on 2015-09-07 06:54:00 in Chemistry by JENNY

How many grams of Cr3+ are produced upon reaction of 14.5 g of a 3.10 M H2S with excess
Cr2O
2?
7
?
Cr2O
2?
7 + 3 H2S + 8 H+ ?
2 Cr3+ + 3 S + 7 H2O
The molar mass of H2S is 34.09 g/mol, the
molar mass of Cr2O
2?
7
is 216.0 g/mol and the
density of the H2S solution is 1.46 g/mL.

1. 6.25 g
2. 2.40 g
3. 14.5 g
4. 0.000395 g
5. 3.41 g
6. 1.89 g
7. 0.0656 g
8. 1.07 g

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