Răspuns:
Explicație:
a) S+H2=H2S
MH2S=2*1+32=34
32 g S ...........34g H2S , 2g H2
x 102g , z
x=96 g S ,z=6 g
100g S ...........80g S pur
y 96 g
y=120 g S
b) 3H2+N2=2NH3
3*2 g..............2*17 g
6 g...................w
w=34 gNH3
η=c practica/c teotetica *100
c practica=η*c teoretica/100=60*34/100=20,4 g