まず、Na24H45O3Cl2P2Ca85KMg6S5B2F6Al5Xe8PtAu5Bi12Hg22Cu32Tl22 内の各原子の数を計算します。
Na: 24, H: 45, O: 3, Cl: 2, P: 2, Ca: 85, K: 1, Mg: 6, S: 5, B: 2, F: 6, Al: 5, Xe: 8, Pt: 1, Au: 5, Bi: 12, Hg: 22, Cu: 32, Tl: 22
次に、周期表の各元素の原子量を調べます。
Na: 22.98976928, H: 1.00794, O: 15.9994, Cl: 35.453, P: 30.973762, Ca: 40.078, K: 39.0983, Mg: 24.305, S: 32.065, B: 10.811, F: 18.9984032, Al: 26.9815386, Xe: 131.293, Pt: 195.084, Au: 196.966569, Bi: 208.9804, Hg: 200.59, Cu: 63.546, Tl: 204.3833
次に、原子数と原子量の積の合計を計算します。
モル質量 (Na24H45O3Cl2P2Ca85KMg6S5B2F6Al5Xe8PtAu5Bi12Hg22Cu32Tl22) = ∑ Counti * Weighti =
Count(Na) * Weight(Na) + Count(H) * Weight(H) + Count(O) * Weight(O) + Count(Cl) * Weight(Cl) + Count(P) * Weight(P) + Count(Ca) * Weight(Ca) + Count(K) * Weight(K) + Count(Mg) * Weight(Mg) + Count(S) * Weight(S) + Count(B) * Weight(B) + Count(F) * Weight(F) + Count(Al) * Weight(Al) + Count(Xe) * Weight(Xe) + Count(Pt) * Weight(Pt) + Count(Au) * Weight(Au) + Count(Bi) * Weight(Bi) + Count(Hg) * Weight(Hg) + Count(Cu) * Weight(Cu) + Count(Tl) * Weight(Tl) =
24 * 22.98976928 + 45 * 1.00794 + 3 * 15.9994 + 2 * 35.453 + 2 * 30.973762 + 85 * 40.078 + 1 * 39.0983 + 6 * 24.305 + 5 * 32.065 + 2 * 10.811 + 6 * 18.9984032 + 5 * 26.9815386 + 8 * 131.293 + 1 * 195.084 + 5 * 196.966569 + 12 * 208.9804 + 22 * 200.59 + 32 * 63.546 + 22 * 204.3833 =
20481.2771 g/mol
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