Question

Calculati masele moleculare relative a compusilor de mai jos .Numiti substantele : a) SO2 b)H2SO3 C)P2O5

Answer 1

Răspuns:

Explicație:

a) SO2 dioxid de sulf

MSO2=AS+2AO=32+2*16=64u.am

b)H2SO3-acid sulfuros

MH2SO3=2AH+AS+3AS=2*1+32+3*16=82 u.a.m

c) P2O5-pentaoxid de difosfor

MP2O5=2AP+5AO=2*31+5*16=142u.a.m