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Mcac2=64g/mol
64g-----100%
xg-------10%
x=6.4g
64-6,4=57,6
22.4dm3-----100%
ydm3---------90
y=20,16dm3
57,6g-----20,16dm3
mg--------1000dm3
m=2857
2857----90%
Sg-------100%
s=3174g=3,174kg
na otrzymanie 1000dm3 acetylenu potrzeba 3,174kg karbidu