What is the elemental composition of $H_3PO_4$ ?

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Answer 1 · 2017-05-13T15:08:57

Well we can quote the elemental composition...........

$"% composition"="Atomic mass"/"Molecular mass"xx100%$

$%H=(3xx1.00794*g*mol^-1)/(97.99*g*mol^-1)xx100%=3.1%.$

$%P=(30.9737*g*mol^-1)/(97.99*g*mol^-1)xx100%=31.6%.$

$%O=(4xx15.999*g*mol^-1)/(97.99*g*mol^-1)xx100%=65.3%.$

Do the elemental percentages sum up to $100%$ ? Should they?

What is the elemental composition of H_3PO_4H_3PO_4?