Question

Calculați cantitatea de hidrogen din 10g H2O 20g NH3 si 10g HCI

Answer 1

10 g H2O

MH2O=2+16=18------> 1mol=18g

18 g H20---------2 g H

10 g H20----------xg

X=10 . 2 : 18=1,11 g H

20 g NH3

MNH3=14 + 3 = 17------> 1mol=17g

17 g NH3----------3gH

20 g NH3----------y

y= 20 . 3 :  17=3, 52 g H

10 g HCl

MHCl=1+ 35,5=36,5------> 1mol=36,5 g

36,5 g HCl-----------1g H

10g HCl----------------zg

z= 10 . 1 : 36,5=0,27 g H