まず、Mn2(SO4)3Fe4Mg2Rn1Au1Ag1Br3Fr2H119CsPbISiUSnSbRaXe 内の各原子の数を計算します。
Mn: 2, Fe: 4, Mg: 2, Rn: 1, Au: 1, Ag: 1, Br: 3, Fr: 2, H: 119, Cs: 1, Pb: 1, I: 1, Si: 1, U: 1, Sn: 1, Sb: 1, Ra: 1, Xe: 1, S: 3, O: 12
次に、周期表の各元素の原子量を調べます。
Mn: 54.938045, Fe: 55.845, Mg: 24.305, Rn: 210.990601, Au: 196.966569, Ag: 107.8682, Br: 79.904, Fr: 223.0197359, H: 1.00794, Cs: 132.9054519, Pb: 207.2, I: 126.90447, Si: 28.0855, U: 238.02891, Sn: 118.71, Sb: 121.76, Ra: 226.0254098, Xe: 131.293, S: 32.065, O: 15.9994
次に、原子数と原子量の積の合計を計算します。
モル質量 (Mn2(SO4)3Fe4Mg2Rn1Au1Ag1Br3Fr2H119CsPbISiUSnSbRaXe) = ∑ Counti * Weighti =
Count(Mn) * Weight(Mn) + Count(Fe) * Weight(Fe) + Count(Mg) * Weight(Mg) + Count(Rn) * Weight(Rn) + Count(Au) * Weight(Au) + Count(Ag) * Weight(Ag) + Count(Br) * Weight(Br) + Count(Fr) * Weight(Fr) + Count(H) * Weight(H) + Count(Cs) * Weight(Cs) + Count(Pb) * Weight(Pb) + Count(I) * Weight(I) + Count(Si) * Weight(Si) + Count(U) * Weight(U) + Count(Sn) * Weight(Sn) + Count(Sb) * Weight(Sb) + Count(Ra) * Weight(Ra) + Count(Xe) * Weight(Xe) + Count(S) * Weight(S) + Count(O) * Weight(O) =
2 * 54.938045 + 4 * 55.845 + 2 * 24.305 + 1 * 210.990601 + 1 * 196.966569 + 1 * 107.8682 + 3 * 79.904 + 2 * 223.0197359 + 119 * 1.00794 + 1 * 132.9054519 + 1 * 207.2 + 1 * 126.90447 + 1 * 28.0855 + 1 * 238.02891 + 1 * 118.71 + 1 * 121.76 + 1 * 226.0254098 + 1 * 131.293 + 3 * 32.065 + 12 * 15.9994 =
3322.4883 g/mol
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