A sample of phosphoric(v) acid h3po4 contains 1.2 1023 molecules.
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A sample of phosphoric acid, H3PO4, contains 1.2 x 1023 molecules......................
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Moles H3PO4 = 1.20 x 10^23 / 6.02 x 10^23 =0.199
Atoms P = 1.20 x 10^23
Atoms H = 3 x 1.20 x 10^23 = 3.6 x 10^23
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