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SAT® Subject Test in Chemistry

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Empirical Formula: Phosphorus Oxide

SATCHM-EGT4YL

Combustion of 3.10 g of phosphorus produces a white, waxy solid with a mass of 5.50 g.

What is the empirical formula for the compound produced in this reaction?

A

$P_4O_7$

B

$P_2O_5$

C

$PO$

D

$P_2O_3$

E

$P_4O_5$