Question

cati moli din fiecare substanta se gasesc in 10g H2O; 20g NH3 ; 10g HCI

Answer 1

nH2O=m/M=10/18=0.55 moli H2O
nNH3=m/M=20/17=1.176 moli
nHCL=m/M=10/36.5=0.273 moli M=masa molara, g/mol
m=masa, g
sau
1mol H .........2g H xmoli...........10g x=5 moli H2 1mol Oxigen.........16 g Oxigen xmoli........10g x=10/16=1.66 moli si tot asa la fiecare