まず、(LiMg2K3Fr7)3F7Sb4(Al3C2Ti9O2)8SmBBrBe2Ba4P3(CH2)3(CH3)2GaHe 内の各原子の数を計算します。
F: 7, Sb: 4, Sm: 1, B: 1, Br: 1, Be: 2, Ba: 4, P: 3, Ga: 1, He: 1, C: 21, H: 12, Al: 24, Ti: 72, O: 16, Li: 3, Mg: 6, K: 9, Fr: 21
次に、周期表の各元素の原子量を調べます。
F: 18.9984032, Sb: 121.76, Sm: 150.36, B: 10.811, Br: 79.904, Be: 9.012182, Ba: 137.327, P: 30.973762, Ga: 69.723, He: 4.002602, C: 12.0107, H: 1.00794, Al: 26.9815386, Ti: 47.867, O: 15.9994, Li: 6.941, Mg: 24.305, K: 39.0983, Fr: 223.0197359
次に、原子数と原子量の積の合計を計算します。
モル質量 ((LiMg2K3Fr7)3F7Sb4(Al3C2Ti9O2)8SmBBrBe2Ba4P3(CH2)3(CH3)2GaHe) = ∑ Counti * Weighti =
Count(F) * Weight(F) + Count(Sb) * Weight(Sb) + Count(Sm) * Weight(Sm) + Count(B) * Weight(B) + Count(Br) * Weight(Br) + Count(Be) * Weight(Be) + Count(Ba) * Weight(Ba) + Count(P) * Weight(P) + Count(Ga) * Weight(Ga) + Count(He) * Weight(He) + Count(C) * Weight(C) + Count(H) * Weight(H) + Count(Al) * Weight(Al) + Count(Ti) * Weight(Ti) + Count(O) * Weight(O) + Count(Li) * Weight(Li) + Count(Mg) * Weight(Mg) + Count(K) * Weight(K) + Count(Fr) * Weight(Fr) =
7 * 18.9984032 + 4 * 121.76 + 1 * 150.36 + 1 * 10.811 + 1 * 79.904 + 2 * 9.012182 + 4 * 137.327 + 3 * 30.973762 + 1 * 69.723 + 1 * 4.002602 + 21 * 12.0107 + 12 * 1.00794 + 24 * 26.9815386 + 72 * 47.867 + 16 * 15.9994 + 3 * 6.941 + 6 * 24.305 + 9 * 39.0983 + 21 * 223.0197359 =
11411.3265 g/mol
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