Question

Me ajudem pfv preciso das respostas

Answer 1

A) Pb(NO3)2

Pb=1 x 207u= 207u

N=2 x 14u= 28u

O= 2 x 6 x 16u= 96u

96u+28u+207u= 331u

B) FeCl2

Fe= 1 x 58u= 58u

Cl= 1 x 35,5u= 35,5u

58u+ 35,5= 93u

C)NaNO2

Na= 1 x 23u= 23u

N= 1 x 14u= 14u

O= 2 x 16u= 32u

32u+14u+23u=69u

D)H2S

H= 2 x 1u= 2u

S= 1 x 32u= 32u

32u+2u= 34u

E)O2

O= 2 x 16u= 32u

F) NH3

N=1 x 14u=14u

H= 3 x 1u=3u

14u+3u= 17u