Question

Calculeaza masele moleculare relative ale substantelor:
a)H2,N2,O2,F2
b)Cl2,Br2,I2.Va rog mult)))

Answer 1

a)2 g
b)28g
c)32g
d)389
e) 71g
f)160g
g)254g

Answer 2

M(h2)= 2*1=2
M(N2)=2* 14= 28
M(O2)= 2*16= 32
M(f2)=2*19=38
M(cl2)= 2*35,5= 71
M(Br2)= 2* 80= 160
M(I2)= 2* 127=254