Odpowiedź :
Zadanie 1
2Ca+O2--->2CaO
xg 60g 123g
x+60g=123g
x=63 g
Zadanie 2
4NH3+5O2--->4NO+6H2O
17g xg 30g 27g
17g+x=30g+27g
x=40 g tlenu
Zadanie 1
2Ca+O2--->2CaO
xg 60g 123g
x+60g=123g
x=63 g
Zadanie 2
4NH3+5O2--->4NO+6H2O
17g xg 30g 27g
17g+x=30g+27g
x=40 g tlenu