Tout d’abord, calculez le nombre de chaque atome en CHAmBBhBkCfCmCnDbDsEsFFlFmHsIKLrMdMtNNoNpOPPaPuRfRgSSgThUVWY :
C: 1, H: 1, Am: 1, B: 1, Bh: 1, Bk: 1, Cf: 1, Cm: 1, Cn: 1, Db: 1, Ds: 1, Es: 1, F: 1, Fl: 1, Fm: 1, Hs: 1, I: 1, K: 1, Lr: 1, Md: 1, Mt: 1, N: 1, No: 1, Np: 1, O: 1, P: 1, Pa: 1, Pu: 1, Rf: 1, Rg: 1, S: 1, Sg: 1, Th: 1, U: 1, V: 1, W: 1, Y: 1
Ensuite, recherchez les poids atomiques de chaque élément du tableau périodique :
C: 12.0107, H: 1.00794, Am: 241.0568291, B: 10.811, Bh: 272.13803, Bk: 247.070307, Cf: 249.0748535, Cm: 243.0613891, Cn: 285.17411, Db: 268.12545, Ds: 281.16206, Es: 252.08298, F: 18.9984032, Fl: 289.18728, Fm: 257.095105, Hs: 270.13465, I: 126.90447, K: 39.0983, Lr: 262.10963, Md: 258.098431, Mt: 276.15116, N: 14.0067, No: 259.10103, Np: 236.04657, O: 15.9994, P: 30.973762, Pa: 231.03588, Pu: 238.0495599, Rf: 265.1167, Rg: 280.16447, S: 32.065, Sg: 271.13347, Th: 232.03806, U: 238.02891, V: 50.9415, W: 183.84, Y: 88.90585
Maintenant, calculez la somme des produits du nombre d’atomes par le poids atomique :
Masse molaire (CHAmBBhBkCfCmCnDbDsEsFFlFmHsIKLrMdMtNNoNpOPPaPuRfRgSSgThUVWY) = ∑ Counti * Weighti =
Count(C) * Weight(C) + Count(H) * Weight(H) + Count(Am) * Weight(Am) + Count(B) * Weight(B) + Count(Bh) * Weight(Bh) + Count(Bk) * Weight(Bk) + Count(Cf) * Weight(Cf) + Count(Cm) * Weight(Cm) + Count(Cn) * Weight(Cn) + Count(Db) * Weight(Db) + Count(Ds) * Weight(Ds) + Count(Es) * Weight(Es) + Count(F) * Weight(F) + Count(Fl) * Weight(Fl) + Count(Fm) * Weight(Fm) + Count(Hs) * Weight(Hs) + Count(I) * Weight(I) + Count(K) * Weight(K) + Count(Lr) * Weight(Lr) + Count(Md) * Weight(Md) + Count(Mt) * Weight(Mt) + Count(N) * Weight(N) + Count(No) * Weight(No) + Count(Np) * Weight(Np) + Count(O) * Weight(O) + Count(P) * Weight(P) + Count(Pa) * Weight(Pa) + Count(Pu) * Weight(Pu) + Count(Rf) * Weight(Rf) + Count(Rg) * Weight(Rg) + Count(S) * Weight(S) + Count(Sg) * Weight(Sg) + Count(Th) * Weight(Th) + Count(U) * Weight(U) + Count(V) * Weight(V) + Count(W) * Weight(W) + Count(Y) * Weight(Y) =
1 * 12.0107 + 1 * 1.00794 + 1 * 241.0568291 + 1 * 10.811 + 1 * 272.13803 + 1 * 247.070307 + 1 * 249.0748535 + 1 * 243.0613891 + 1 * 285.17411 + 1 * 268.12545 + 1 * 281.16206 + 1 * 252.08298 + 1 * 18.9984032 + 1 * 289.18728 + 1 * 257.095105 + 1 * 270.13465 + 1 * 126.90447 + 1 * 39.0983 + 1 * 262.10963 + 1 * 258.098431 + 1 * 276.15116 + 1 * 14.0067 + 1 * 259.10103 + 1 * 236.04657 + 1 * 15.9994 + 1 * 30.973762 + 1 * 231.03588 + 1 * 238.0495599 + 1 * 265.1167 + 1 * 280.16447 + 1 * 32.065 + 1 * 271.13347 + 1 * 232.03806 + 1 * 238.02891 + 1 * 50.9415 + 1 * 183.84 + 1 * 88.90585 =
6827.9999 g/mol
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