zad 4
10g x
2H2 + O2 --> 2H2O
32g 36g
10g O2 - x
32g O2 - 36g H2O
x=11,25g
zad 5
x 30g
H2 + S --> H2S
32g 34g
x - 30g H2S
32g S - 34g H2S
x=28,24g
zad 6
5g x
Zn + 2HCl --> ZnCl2 + H2
65g 2g
5g Zn - x
65g Zn - 2g H2
x = 0,154g