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Answer to Question #254390 in General Chemistry for dondon

Question #254390

2.The molecular weight for this compound is137.32g/mol. What is themolecularformula for this compound?


1
Expert's answer
2021-10-22T03:44:03-0400

Molar mass of PCl3 = 137.33 g

Molecular ratio= Emprical ratio*molar mass/Molar mass of empirical formula

= (1:3)×(137.33/137.33)

= 1:3

Hence the molecular formula is PCl3


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