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2009-12-01T23:00:34+01:00
1mol HCl - 22,4 dm3
x ---------- 67,5 dm3

x=3 mole

MHCl = 35,5 + 1 = 36.5g/mol
mHcl = 3*36.5 = 109.5 g
m r-ru = 109.5 + 440 = 559.5 g

V = m/d
V=508 cm3 = 0,508dm3

Cp= ms/mr * 100% = 109.5*100/559.5% = 19,6%

Cn= n/V = x/V
Cn = 3/0.508=5.9mol/dm3
3 3 3