まず、Al7Pb3Ir2Au9Li5K3Na4C5H7N3O2I4P3S2Cl7F3Se7Zn5 内の各原子の数を計算します。
Al: 7, Pb: 3, Ir: 2, Au: 9, Li: 5, K: 3, Na: 4, C: 5, H: 7, N: 3, O: 2, I: 4, P: 3, S: 2, Cl: 7, F: 3, Se: 7, Zn: 5
次に、周期表の各元素の原子量を調べます。
Al: 26.9815386, Pb: 207.2, Ir: 192.217, Au: 196.966569, Li: 6.941, K: 39.0983, Na: 22.98976928, C: 12.0107, H: 1.00794, N: 14.0067, O: 15.9994, I: 126.90447, P: 30.973762, S: 32.065, Cl: 35.453, F: 18.9984032, Se: 78.96, Zn: 65.38
次に、原子数と原子量の積の合計を計算します。
モル質量 (Al7Pb3Ir2Au9Li5K3Na4C5H7N3O2I4P3S2Cl7F3Se7Zn5) = ∑ Counti * Weighti =
Count(Al) * Weight(Al) + Count(Pb) * Weight(Pb) + Count(Ir) * Weight(Ir) + Count(Au) * Weight(Au) + Count(Li) * Weight(Li) + Count(K) * Weight(K) + Count(Na) * Weight(Na) + Count(C) * Weight(C) + Count(H) * Weight(H) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(I) * Weight(I) + Count(P) * Weight(P) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) + Count(F) * Weight(F) + Count(Se) * Weight(Se) + Count(Zn) * Weight(Zn) =
7 * 26.9815386 + 3 * 207.2 + 2 * 192.217 + 9 * 196.966569 + 5 * 6.941 + 3 * 39.0983 + 4 * 22.98976928 + 5 * 12.0107 + 7 * 1.00794 + 3 * 14.0067 + 2 * 15.9994 + 4 * 126.90447 + 3 * 30.973762 + 2 * 32.065 + 7 * 35.453 + 3 * 18.9984032 + 7 * 78.96 + 5 * 65.38 =
5202.1462 g/mol
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