Question

1 . Determină masa (g) pentru : 
a) 5 moli azot 
b) 4 moli nichel 
c) 10 kmoli fluor 

Answer 1

a)1mol...............14
5moli..................x
x=14*5/1=70g N

b)1mol..............59
4moli..................y
y=59*4/1=236g Ni

c)1mol..................19g
10000moli.............z
z=19*10000/1=190000g F

Answer 2

a)∨=masa/masa moleculara⇒5=m/14⇒m=70 g N
b)∨=masa/masa moleculara⇒4=n/59⇒m=236 g Ni
c)10=m/19⇒m=190 kg F
unde ∨ reprezinta numarul de moli