Homework Help: ap chemistry

Posted by cheri on Monday, September 10, 2012 at 9:44pm.

A 25.2 g of iron ore is treated as follows. The
iron in the sample is all converted by a series
of chemical reactions to Fe2O3. The mass of
Fe2O3 is measured to be 12 grams. What was
the percent iron in the sample of ore?
Answer in units of %

ap chemistry - DrBob222, Monday, September 10, 2012 at 10:33pm
Mass Fe in sample = (12 x 2 x atomic mass Fe/molar mass Fe2O3) = ?
%Fe = (mass Fe/mass sample)*100 = ?

Answer this Question

Related Questions

AP Chemistry - A 7.6 g sample of iron ore is treated as follows. The iron in the...
AP chemistry - A 28 g sample of iron ore is treated as follows. The iron in the ...
chemistry - A 28.6 g of iron ore is treated as follows. The iron in the sample ...
chemistry - A 46.9 g of iron ore is treated as follows. The iron in the sample ...
chemistry - A 12.8 g sample of iron ore is treated as follows. The iron in the ...
chemistry - A 33.8 g sample of iron ore is treated as follows. The iron in the ...
11th grade - A 36.5 g of iron ore is treated as follows. The iron in the sample ...
Chemistry - I have 3 I don't understand how to do. A 33.2 g of iron ore is ...
Chemisrty - A 38 g sample of iron ore is treated as follows. The iron in the ...
Ap Chemistry - An ore contains Fe3O4 and no other iron. The iron in a 60.67 gram...

For Further Reading

First Name:
School Subject:
Answer: