Calculati numarul de moli din : a) 56g N2 ; 34g NH3 ; b) 4,48dm la 3 (c.n) N2 ; 4,48L (c.n) NH3 c) 9,033.10 la 23 molecule N2 ; 9,033.10la 26 molecule NH3
Calculati masa a : a) 67,2 dmla 3 (c.n) N2 ; b) 67,2 dm la 3 (c.n) NH3

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Răspunsuri

2014-01-16T15:17:39+02:00
Nr de moli: 
a) 1 mol N2..............28 g
     x moli..............56g
x=2 moli
1mol NH3..................17g
    y.............................34
y= 2 moli
b) 1mol N2............22,4 dm^3
     x.................4,48 dm^3
x=5 moli
  1 mol NH3....... 22,4l
  y....................4,48 l
y=5 moli
c) 1 mol.........2*6,023*10^23 molec
   x................9,033*10^26molec
x=0.74*10^3 moli

Masa:
a) 28gN2..............22,4 dm^3
     x g................67,2 dm^3
x=84 g
b) 17g NH3...............22,4dm^3
  y g........................67,2 dm^3
y=51g
18 4 18
multam...dupa ceva timp am aflat cum se fac :D