Question

Calculați masa molara pentru:
1.Al2 (SO4)3
2.CuCl2
Fe2O3
Ca3 (PO4)2


Urgent vă roooog❤

Answer 1

1. MAl₂(SO4)₃ = 2AAl + 3(AS+4AO) = 2*27 + 3(32+4*16) = 342g/mol

2. MCuCl₂ = ACu + 2ACl = 64 + 2*35,5 = 135g/mol

MFe₂O₃ = 2AFe + 3AO = 2*56 + 3*16 = 160g/mol

MCa₃(PO₄)₂ = 3ACa + 2(AP+4AO) = 3*40 + 2(31+4*16) = 310g/mol

M-masa moleculara, g/mol

A-masa atomica (extrasa din sistemul periodic)