まず、N2O5Au2S7Fe2K44Pt3Pb8Ru4Bi9Po2Ra9Co3H400Br5Kr3He28Ts5 内の各原子の数を計算します。
N: 2, O: 5, Au: 2, S: 7, Fe: 2, K: 44, Pt: 3, Pb: 8, Ru: 4, Bi: 9, Po: 2, Ra: 9, Co: 3, H: 400, Br: 5, Kr: 3, He: 28, Ts: 5
次に、周期表の各元素の原子量を調べます。
N: 14.0067, O: 15.9994, Au: 196.966569, S: 32.065, Fe: 55.845, K: 39.0983, Pt: 195.084, Pb: 207.2, Ru: 101.07, Bi: 208.9804, Po: 208.9824304, Ra: 226.0254098, Co: 58.933195, H: 1.00794, Br: 79.904, Kr: 83.798, He: 4.002602, Ts: 292.20755
次に、原子数と原子量の積の合計を計算します。
モル質量 (N2O5Au2S7Fe2K44Pt3Pb8Ru4Bi9Po2Ra9Co3H400Br5Kr3He28Ts5) = ∑ Counti * Weighti =
Count(N) * Weight(N) + Count(O) * Weight(O) + Count(Au) * Weight(Au) + Count(S) * Weight(S) + Count(Fe) * Weight(Fe) + Count(K) * Weight(K) + Count(Pt) * Weight(Pt) + Count(Pb) * Weight(Pb) + Count(Ru) * Weight(Ru) + Count(Bi) * Weight(Bi) + Count(Po) * Weight(Po) + Count(Ra) * Weight(Ra) + Count(Co) * Weight(Co) + Count(H) * Weight(H) + Count(Br) * Weight(Br) + Count(Kr) * Weight(Kr) + Count(He) * Weight(He) + Count(Ts) * Weight(Ts) =
2 * 14.0067 + 5 * 15.9994 + 2 * 196.966569 + 7 * 32.065 + 2 * 55.845 + 44 * 39.0983 + 3 * 195.084 + 8 * 207.2 + 4 * 101.07 + 9 * 208.9804 + 2 * 208.9824304 + 9 * 226.0254098 + 3 * 58.933195 + 400 * 1.00794 + 5 * 79.904 + 3 * 83.798 + 28 * 4.002602 + 5 * 292.20755 =
12342.5631 g/mol
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