Bonjour ,
M(I2) = 2M(I) = 2 x 126,9 = 253,8 g/mol
M(UF4) = M(U) + 4M(F) = 238 + 4 x 19,0 = 314 g/mol
M(CuSO4) = M(Cu) + M(S) + 4M(O) = 63,5 + 32,1 + 4 x 16,0 = 159,6 g/mol
M(C4H10O) = 4M(C) + 10M(H) + M(O) = 4 x 12,0 + 10 x 1,00 + 16,0 = 74 g/mol
M(H2SO4) = 2M(H) + M(S) + 4M(O)
= 2 x 1,00 + 32,1 + 4 x 16,0 = 98,1 g/mol
Bonne journée
