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A compound contains 14.5 g of magnesium and 3.5 g of oxygen. What is the mass percent of oxygen in the compound

A compound contains 14.5 g of magnesium and 3.5 g of oxygen. What is the mass percent of oxygen in the compound
asked 1.0k views
4 votes
A compound contains 14.5 g of magnesium and 3.5 g of oxygen. What is the mass percent of oxygen in the compound

asked
User Icaruk
by
8.1k points

2 Answers

2 votes

Answer:

For Edmentum/Plato users, the correct answer is B. 19.44%

answered
User TROODON
by
8.0k points
0 votes
♥ Gather information we know:
Total Mass:
14.5+3.5
Solve:

=18g
Gather more information and solve:
Percent of Oxygen:
(3.5)/(18)
* 100


Final answer: 19.44%
answered
User RGe
by
7.9k points
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