Problem: A phosphorus compound that contains 34.00% phosphorus by mass has the formula X3P2.Identify the element X.

FREE Expert Solution

mass percent=mass elementtotal mass of compound×100


Calculate the molar mass of compound X3P2:

molar mass P = 30.974 g/mol

total mass P = 30.974 g/mol x 2

total mass P = 61.948 g/mol

% P = 34.00%

mass compound=mass elementmass percent×100mass X3P2=mass Pmass percent×100mass X3P2=61.948 gmol34.00%×100

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Problem Details

A phosphorus compound that contains 34.00% phosphorus by mass has the formula X3P2.

Identify the element X.

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