a=2m; b=3m; c=2,5m
V=a*b*c
V=2m*3m*2,5m
V = 15m³ = 15000dm³
15000dm³ powietrza------100%
xdm³ azotu-----------------78%
x = 11700dm³ azotu
d=m/V m=V*d m = 11700dm³*1,25g/dm³
m = 14625g
m = 14,6kg azotu
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a=2m; b=3m; c=2,5m
V=a*b*c
V=2m*3m*2,5m
V = 15m³ = 15000dm³
15000dm³ powietrza------100%
xdm³ azotu-----------------78%
x = 11700dm³ azotu
d=m/V
m=V*d
m = 11700dm³*1,25g/dm³
m = 14625g
m = 14,6kg azotu