Question

Cati moli din fiecare substanta se gasesc in 10 g H2O 20 g NH3 si 10 g HCI?

Answer 1

H2O    MH2O=2+16=18
18gH2O--------------1mol H2O
10g H2O-----------------X
X=10:18=0,5 moli H2O

NH3    MNH3=14+3=17
17gNH3--------------1molNH3
20 gNH3--------------Y
Y=20:17=1,17 moliNH3

HCl       MHCl=1+35,5=36,5
36,5 gHCl----------------1 molHCl
10g HCl-------------------zmoli 
z=10:36,5=0,27 moli HCl