V=0,25dm³=0,00025m³
P(ro)=1,75g/cm³=1750kg/m³
m=?
--------------
m=P*V
m=1750*0,00025
m=0,45kg
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V=0,25dm³=0,00025m³
P(ro)=1,75g/cm³=1750kg/m³
m=?
--------------
m=P*V
m=1750*0,00025
m=0,45kg