Question

Calculeaza ma sa moleculara relativa a urmatoarelor substante :
a)N2;. b)O2;. c)SO2;. D)C2H4

Answer 1

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

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

c) MSO2=AS+2AO=32+2*16=64g/mol

d) MC2H4=2AC+4AH=2*12+4*1=28g/mol

M-masa molara,g/mol

A-masa atomica