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AP Chemistry/Unit 1: Atomic Structure and Properties
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Molecular Formula From Percent Composition

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The mass percent composition of a compound with a molar mass of 170.14 g/mol170.14\,g/mol is shown in the table. What is the molecular formula of the compound?

Element Mass Percent (%)
C 56.5
H 7.11
P 36.4
A

C4H6PC_4H_6P

B

C8H10P2C_8H_{10}P_2

C

C6H9P2C_6H_9P_2

D

C8H12P2C_8H_{12}P_2

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