まず、HOAgAuCuClCMgFeHeXeLiGeAsSeSAlKSiPb 内の各原子の数を計算します。
H: 1, O: 1, Ag: 1, Au: 1, Cu: 1, Cl: 1, C: 1, Mg: 1, Fe: 1, He: 1, Xe: 1, Li: 1, Ge: 1, As: 1, Se: 1, S: 1, Al: 1, K: 1, Si: 1, Pb: 1
次に、周期表の各元素の原子量を調べます。
H: 1.00794, O: 15.9994, Ag: 107.8682, Au: 196.966569, Cu: 63.546, Cl: 35.453, C: 12.0107, Mg: 24.305, Fe: 55.845, He: 4.002602, Xe: 131.293, Li: 6.941, Ge: 72.64, As: 74.9216, Se: 78.96, S: 32.065, Al: 26.9815386, K: 39.0983, Si: 28.0855, Pb: 207.2
次に、原子数と原子量の積の合計を計算します。
モル質量 (HOAgAuCuClCMgFeHeXeLiGeAsSeSAlKSiPb) = ∑ Counti * Weighti =
Count(H) * Weight(H) + Count(O) * Weight(O) + Count(Ag) * Weight(Ag) + Count(Au) * Weight(Au) + Count(Cu) * Weight(Cu) + Count(Cl) * Weight(Cl) + Count(C) * Weight(C) + Count(Mg) * Weight(Mg) + Count(Fe) * Weight(Fe) + Count(He) * Weight(He) + Count(Xe) * Weight(Xe) + Count(Li) * Weight(Li) + Count(Ge) * Weight(Ge) + Count(As) * Weight(As) + Count(Se) * Weight(Se) + Count(S) * Weight(S) + Count(Al) * Weight(Al) + Count(K) * Weight(K) + Count(Si) * Weight(Si) + Count(Pb) * Weight(Pb) =
1 * 1.00794 + 1 * 15.9994 + 1 * 107.8682 + 1 * 196.966569 + 1 * 63.546 + 1 * 35.453 + 1 * 12.0107 + 1 * 24.305 + 1 * 55.845 + 1 * 4.002602 + 1 * 131.293 + 1 * 6.941 + 1 * 72.64 + 1 * 74.9216 + 1 * 78.96 + 1 * 32.065 + 1 * 26.9815386 + 1 * 39.0983 + 1 * 28.0855 + 1 * 207.2 =
1215.1903 g/mol
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