What is the gram-formula mass of (NH4)3PO4?(1) 112g/mol (2) 121g/mol (3) 149g/mol (4) 242g/mol

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01-06-2015
Chemistry

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What is the gram-formula mass of (NH4)3PO4?(1) 112g/mol (2) 121g/mol (3) 149g/mol (4) 242g/mol

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Got two questions I need help with them .

lulu1991 lulu1991 · Answer 1 · 2015-06-01T23:32:31+02:00

lulu1991 lulu1991

01-06-2015

The gram-formula mass means that the mass of one mole molecule. Then you just need to calculate the elements together. So the gram-formula mass of (NH4)3PO4 is equals to (14+4)*3+31+16*4= 149g/mol. So the answer is (3).

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