まず、H2Li2Na2K2Rb2Cs2Fr2Be2Mg2Ca2Sr2Ba2Ra2Sc2Y2La2Ac2 内の各原子の数を計算します。
H: 2, Li: 2, Na: 2, K: 2, Rb: 2, Cs: 2, Fr: 2, Be: 2, Mg: 2, Ca: 2, Sr: 2, Ba: 2, Ra: 2, Sc: 2, Y: 2, La: 2, Ac: 2
次に、周期表の各元素の原子量を調べます。
H: 1.00794, Li: 6.941, Na: 22.98976928, K: 39.0983, Rb: 85.4678, Cs: 132.9054519, Fr: 223.0197359, Be: 9.012182, Mg: 24.305, Ca: 40.078, Sr: 87.62, Ba: 137.327, Ra: 226.0254098, Sc: 44.955912, Y: 88.90585, La: 138.90547, Ac: 227.0277521
次に、原子数と原子量の積の合計を計算します。
モル質量 (H2Li2Na2K2Rb2Cs2Fr2Be2Mg2Ca2Sr2Ba2Ra2Sc2Y2La2Ac2) = ∑ Counti * Weighti =
Count(H) * Weight(H) + Count(Li) * Weight(Li) + Count(Na) * Weight(Na) + Count(K) * Weight(K) + Count(Rb) * Weight(Rb) + Count(Cs) * Weight(Cs) + Count(Fr) * Weight(Fr) + Count(Be) * Weight(Be) + Count(Mg) * Weight(Mg) + Count(Ca) * Weight(Ca) + Count(Sr) * Weight(Sr) + Count(Ba) * Weight(Ba) + Count(Ra) * Weight(Ra) + Count(Sc) * Weight(Sc) + Count(Y) * Weight(Y) + Count(La) * Weight(La) + Count(Ac) * Weight(Ac) =
2 * 1.00794 + 2 * 6.941 + 2 * 22.98976928 + 2 * 39.0983 + 2 * 85.4678 + 2 * 132.9054519 + 2 * 223.0197359 + 2 * 9.012182 + 2 * 24.305 + 2 * 40.078 + 2 * 87.62 + 2 * 137.327 + 2 * 226.0254098 + 2 * 44.955912 + 2 * 88.90585 + 2 * 138.90547 + 2 * 227.0277521 =
3071.1851 g/mol
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