まず、Na2B4O7*10H2OAlIHgMgPCNBeBrCrSbSCaAsCu 内の各原子の数を計算します。
Na: 2, B: 4, O: 17, H: 20, Al: 10, I: 10, Hg: 10, Mg: 10, P: 10, C: 10, N: 10, Be: 10, Br: 10, Cr: 10, Sb: 10, S: 10, Ca: 10, As: 10, Cu: 10
次に、周期表の各元素の原子量を調べます。
Na: 22.98976928, B: 10.811, O: 15.9994, H: 1.00794, Al: 26.9815386, I: 126.90447, Hg: 200.59, Mg: 24.305, P: 30.973762, C: 12.0107, N: 14.0067, Be: 9.012182, Br: 79.904, Cr: 51.9961, Sb: 121.76, S: 32.065, Ca: 40.078, As: 74.9216, Cu: 63.546
次に、原子数と原子量の積の合計を計算します。
モル質量 (Na2B4O7*10H2OAlIHgMgPCNBeBrCrSbSCaAsCu) = ∑ Counti * Weighti =
Count(Na) * Weight(Na) + Count(B) * Weight(B) + Count(O) * Weight(O) + Count(H) * Weight(H) + Count(Al) * Weight(Al) + Count(I) * Weight(I) + Count(Hg) * Weight(Hg) + Count(Mg) * Weight(Mg) + Count(P) * Weight(P) + Count(C) * Weight(C) + Count(N) * Weight(N) + Count(Be) * Weight(Be) + Count(Br) * Weight(Br) + Count(Cr) * Weight(Cr) + Count(Sb) * Weight(Sb) + Count(S) * Weight(S) + Count(Ca) * Weight(Ca) + Count(As) * Weight(As) + Count(Cu) * Weight(Cu) =
2 * 22.98976928 + 4 * 10.811 + 17 * 15.9994 + 20 * 1.00794 + 10 * 26.9815386 + 10 * 126.90447 + 10 * 200.59 + 10 * 24.305 + 10 * 30.973762 + 10 * 12.0107 + 10 * 14.0067 + 10 * 9.012182 + 10 * 79.904 + 10 * 51.9961 + 10 * 121.76 + 10 * 32.065 + 10 * 40.078 + 10 * 74.9216 + 10 * 63.546 =
9471.9227 g/mol
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