Question

1) Calculate the percent composition by mass (to 4 significantfigure) of all the elements in calcium phosphate [Ca3(PO4)2], amajor component of bone

%Ca?

%P?

%O?

2) Menthol is a flavoring agent extracted from peppermint oil.It contains C,H, and O. In one combustion analysis, 10.0mg of thesubstance yields 11.53mg of H2O and 28.16mg of CO2. what is theempirical formula of menthol?

CHO (add the subcritps)

3) Determine the number of atoms of each element in theempirical formula of a compound with the following composition.

62.40 percent C, 9.892 percent H, 27.70 percent O

c=atoms? h=atoms?O=atoms?

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