まず、Na2Al5C8XeAmI2Cl2Mn3H69F12Cu5Ni2Rh2Be23WZrSrB7Rb 内の各原子の数を計算します。
Na: 2, Al: 5, C: 8, Xe: 1, Am: 1, I: 2, Cl: 2, Mn: 3, H: 69, F: 12, Cu: 5, Ni: 2, Rh: 2, Be: 23, W: 1, Zr: 1, Sr: 1, B: 7, Rb: 1
次に、周期表の各元素の原子量を調べます。
Na: 22.98976928, Al: 26.9815386, C: 12.0107, Xe: 131.293, Am: 241.0568291, I: 126.90447, Cl: 35.453, Mn: 54.938045, H: 1.00794, F: 18.9984032, Cu: 63.546, Ni: 58.6934, Rh: 102.9055, Be: 9.012182, W: 183.84, Zr: 91.224, Sr: 87.62, B: 10.811, Rb: 85.4678
次に、原子数と原子量の積の合計を計算します。
モル質量 (Na2Al5C8XeAmI2Cl2Mn3H69F12Cu5Ni2Rh2Be23WZrSrB7Rb) = ∑ Counti * Weighti =
Count(Na) * Weight(Na) + Count(Al) * Weight(Al) + Count(C) * Weight(C) + Count(Xe) * Weight(Xe) + Count(Am) * Weight(Am) + Count(I) * Weight(I) + Count(Cl) * Weight(Cl) + Count(Mn) * Weight(Mn) + Count(H) * Weight(H) + Count(F) * Weight(F) + Count(Cu) * Weight(Cu) + Count(Ni) * Weight(Ni) + Count(Rh) * Weight(Rh) + Count(Be) * Weight(Be) + Count(W) * Weight(W) + Count(Zr) * Weight(Zr) + Count(Sr) * Weight(Sr) + Count(B) * Weight(B) + Count(Rb) * Weight(Rb) =
2 * 22.98976928 + 5 * 26.9815386 + 8 * 12.0107 + 1 * 131.293 + 1 * 241.0568291 + 2 * 126.90447 + 2 * 35.453 + 3 * 54.938045 + 69 * 1.00794 + 12 * 18.9984032 + 5 * 63.546 + 2 * 58.6934 + 2 * 102.9055 + 23 * 9.012182 + 1 * 183.84 + 1 * 91.224 + 1 * 87.62 + 7 * 10.811 + 1 * 85.4678 =
2808.4172 g/mol
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