Question

Calculati masa pentru:
2 mol de CL2
3 kmol de NH3
dau coroana!!Helppppppp​

Answer 1

2 moli Cl2

n=m :M      n= nr. de moli   ;  m=masa subst.  ; M=masa molara

m=n . M

m=2moli . 71 g/moli=142 g clor        [MCl2=2.35,5=71----> 1mol=71g[71g/moli]

3 kmoli NH3

MNH3=14 +3=17------> 1mol=17g [17g/moli ]   ;   [  3kmoli=3000 moli  ]

m=n.M

m=3000 moli .17g/moli=51000g NH3