まず、NaClKClMgCl2H12O6CaCl2MgSO4NaHCO3NaH2PO4H2ONa2SiO3NaNO3 内の各原子の数を計算します。
Na: 6, Cl: 6, K: 1, Mg: 2, H: 17, O: 24, Ca: 1, S: 1, C: 1, P: 1, Si: 1, N: 1
次に、周期表の各元素の原子量を調べます。
Na: 22.98976928, Cl: 35.453, K: 39.0983, Mg: 24.305, H: 1.00794, O: 15.9994, Ca: 40.078, S: 32.065, C: 12.0107, P: 30.973762, Si: 28.0855, N: 14.0067
次に、原子数と原子量の積の合計を計算します。
モル質量 (NaClKClMgCl2H12O6CaCl2MgSO4NaHCO3NaH2PO4H2ONa2SiO3NaNO3) = ∑ Counti * Weighti =
Count(Na) * Weight(Na) + Count(Cl) * Weight(Cl) + Count(K) * Weight(K) + Count(Mg) * Weight(Mg) + Count(H) * Weight(H) + Count(O) * Weight(O) + Count(Ca) * Weight(Ca) + Count(S) * Weight(S) + Count(C) * Weight(C) + Count(P) * Weight(P) + Count(Si) * Weight(Si) + Count(N) * Weight(N) =
6 * 22.98976928 + 6 * 35.453 + 1 * 39.0983 + 2 * 24.305 + 17 * 1.00794 + 24 * 15.9994 + 1 * 40.078 + 1 * 32.065 + 1 * 12.0107 + 1 * 30.973762 + 1 * 28.0855 + 1 * 14.0067 =
996.7052 g/mol
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