Formula Weights (Section)
Calculate the percentage by mass of the indicated element in the following compounds: (a) carbon in acetylene, C2H2, a gas used in welding; (b) hydrogen in ascorbic acid, HC6H7O6, also known as vitamin C; (c) hydrogen in ammonium sulfate, (NH4)2SO4, a substance used as a nitrogen fertilizer; (d) platinum in PtCl2(NH3)2, a chemotherapy agent called cisplatin; (e) oxygen in the female sex hormone estradiol, C18H24O2; (f) carbon in capsaicin, C18H27NO3, the compound that gives the hot taste to chili peppers.
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