まず、Al5As9C20O70Zn4P14F38N34Ar6Br18B6Li9Be23Si2Xe5Ne9Ge6Po90Pt20 内の各原子の数を計算します。
Al: 5, As: 9, C: 20, O: 70, Zn: 4, P: 14, F: 38, N: 34, Ar: 6, Br: 18, B: 6, Li: 9, Be: 23, Si: 2, Xe: 5, Ne: 9, Ge: 6, Po: 90, Pt: 20
次に、周期表の各元素の原子量を調べます。
Al: 26.9815386, As: 74.9216, C: 12.0107, O: 15.9994, Zn: 65.38, P: 30.973762, F: 18.9984032, N: 14.0067, Ar: 39.948, Br: 79.904, B: 10.811, Li: 6.941, Be: 9.012182, Si: 28.0855, Xe: 131.293, Ne: 20.1797, Ge: 72.64, Po: 208.9824304, Pt: 195.084
次に、原子数と原子量の積の合計を計算します。
モル質量 (Al5As9C20O70Zn4P14F38N34Ar6Br18B6Li9Be23Si2Xe5Ne9Ge6Po90Pt20) = ∑ Counti * Weighti =
Count(Al) * Weight(Al) + Count(As) * Weight(As) + Count(C) * Weight(C) + Count(O) * Weight(O) + Count(Zn) * Weight(Zn) + Count(P) * Weight(P) + Count(F) * Weight(F) + Count(N) * Weight(N) + Count(Ar) * Weight(Ar) + Count(Br) * Weight(Br) + Count(B) * Weight(B) + Count(Li) * Weight(Li) + Count(Be) * Weight(Be) + Count(Si) * Weight(Si) + Count(Xe) * Weight(Xe) + Count(Ne) * Weight(Ne) + Count(Ge) * Weight(Ge) + Count(Po) * Weight(Po) + Count(Pt) * Weight(Pt) =
5 * 26.9815386 + 9 * 74.9216 + 20 * 12.0107 + 70 * 15.9994 + 4 * 65.38 + 14 * 30.973762 + 38 * 18.9984032 + 34 * 14.0067 + 6 * 39.948 + 18 * 79.904 + 6 * 10.811 + 9 * 6.941 + 23 * 9.012182 + 2 * 28.0855 + 5 * 131.293 + 9 * 20.1797 + 6 * 72.64 + 90 * 208.9824304 + 20 * 195.084 =
30115.4611 g/mol
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