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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

Respuesta :

♥ Gather information we know:
Total Mass: [tex]14.5+3.5[/tex]
Solve:
[tex]=18g[/tex]
Gather more information and solve:
Percent of Oxygen: [tex] \frac{3.5}{18} [/tex]  [tex]* 100[/tex]


Final answer: 19.44% 

Answer:

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

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