Question

Ile to kg/m3

5g/dm3=

6000mg/l=

Answer 1

1kg = 1000g,   1g = 10^-3kg      ^-3 znaczy do potęgi minus 3

1m^3 = 1000 dm^3,      1dm^3 = 10^-3 m^3

 

5g/dm3 = 5*10^-3kg / 10^-3 m^3 = 5kg/m^3

1kg = 10^6 mg,   1mg = 10^-6 kg

1l = 1dm^3,         1dm^3 = 10^-3 m^3

 

6000mg/l=

= 6000*10^-6 kg / 10^-3 m^3 =

= 6000*10^-3 kg/m^3 = 

= 6*10^3*10^-3 kg/m^3 =

= 6kg/m^3