Question

53 g carbonat de sodiu
a) formula chimica
b) calculati masa morala
c) raportul atomic
d) raportul masic
e) procentul masic
f) gC=? gO=?

dau coroana ​

Answer 1

Răspuns:

Explicație:

a) Na2CO3

b) M =2*23+12+3*16=106

c Ra=2:1:3

d) Rm =2ANa:AC:3AO=2*23:12:3*16=46:12:48=23:6:24

e ) 53 g...23gNa...6gC....24gO

100g .......x..........y.........z

x=43,39 y=11,32 z=45,28

f) 53 g......6g C....24 g O

53 g ......x.........y

x=6g y=24 g