What is the mass percentage of oxygen in Ba3(PO4)2? Please help how do I go about figuring this out?

asked Dec 19, 2022 24.8k views

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3 votes

Molecular Mass of Compound.

$\\ \sf\longmapsto Ba_3(PO_4)_2$

$\\ \sf\longmapsto 3(137u)+2(39u+4(16u))$

$\\ \sf\longmapsto 411u+2(39u+64u)$

$\\ \sf\longmapsto 411u+2(103u)$

$\\ \sf\longmapsto 411u+206u$

$\\ \sf\longmapsto 617u$

$\\ \sf\longmapsto Mass\%\:of\:O$

$\\ \sf\longmapsto (64)/(617)* 100$

$\\ \sf\longmapsto (6400)/(617)$

$\\ \sf\longmapsto 10.3\%$

Greg Samson answered Dec 24, 2022

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