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v=0,5dm3
Cm=0,25mol/dm3
Cm=n/v
n=Cm*v
n=0,25*0,5
n=0,125mola
1mol-22,4dm3
0.125mola-x
x=0.125*22.4/1
x=2.8dm3
2
200g(H2O)-90%
x-10%
x=10*200/90
x=22,2g(NH3)
3
50g-95%
x-5%
x=2,63g
mHCl=36.5g
36.5g-22,4dm3
2.63g-x
x=2.63*22.4/36.5
x=1.614dm3