Question

Ajutatima va rog: Calculeaza masele molare pentru substantele:H2,N2,O2,Br2,Cl2.

Answer 1

MH2=2AH=2*1=2g/mol

MN2=2AN=2*14=28g/mol

MO2=2AO=2*16=32g/mol

MBr2=2ABr=2*80=160g/mol

MCl2=2ACl=2*35,5=71g/mol

M-masa molara,g/mol

A-masa atomica extrasa din S.P