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Calculate the percent by mass of the element listed first in the formulas for each of...

Calculate the percent by mass of the element listed first in the formulas for each of the following compounds. , 1-octanol C8H18O, ‍ ‍ calcium phosphate Ca3(PO4)2, ‍ 3-phenylphenol C12H10O, ‍ ‍ aluminum acetate Al(C2H3O2)3, ‍ ‍

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