Question #54232

Calculate the expected mass of one mole of 31P (phosphorus) atom given that the Avogadro constant equals 6.0225 * 10^23, the mass of one electron equals 9.1091 * 10^ -28 grams, the mass of the one proton equals 1.6725 * 10 ^-24 grams and the mass of one neutron equals 1.6748 * 10 ^ -24 grams.
so far I have:
9.1091 * 10^ -28*15
1.6725 * 10 ^-24 * 15
1.6748 * 10 ^ -24 *16
is this correct.

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