Register
Iron (III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 16.7 g of Fe reacts completely with oxygen? A. 12.0 g B. 23.9 g C. 47.8 g D. 95.6 g
231k views
2 votes
Iron (III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3

are formed when 16.7 g of Fe reacts completely with oxygen?

A. 12.0 g

B. 23.9 g

C. 47.8 g

D. 95.6 g

User Michael Kolakowski
by
8.1k points

1 Answer

2 votes
The answer is B.

First write a balanced equation, which is
4Fe + 3O2 => 2Fe2O3.

Then divide the grams of Fe by the molar mass of Fe (16.7/55.85).

You now know the number of moles of Fe, so perform dimensional analysis.
(.299*2*159.70)/(4*1) = 23.9 g

User Zorg
by
8.3k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

Compare and contrast an electric generator and a battery??
Can someone complete the chemical reactions, or write which one do not occur, and provide tehir types? *c2h4+h2o *c3h8 + hcl *c2h2+br2 *c4h10+br2 *c3h6+br2
As an object’s temperature increases, the ____________________ at which it radiates energy increases.
Why is gold preferred as a superior metal over silver and bronze?
What is the evidence of a chemical reaction when the fireworks go off
Link Copied!