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Question

The density of water is 1.0 x 10^3 kg/m^3

Find the mass of water needed to fill a 2.0 L bottle.

Answer 1

1m^3 = 1000L

mass = 10^3 times 2/1000 = 2Kgs

Answer 2

mass = density times volume

1m^3 = 1000L

mass = 10^3  times 2/1000 = 2Kgs

Answer 3

1 L = 1000 ml = 1000 cm^3 (1 m/100 cm)^3 = 1000/(100)^3 m^3 = .001 m^3

So, 2.0L (.001 m^3/L) = .002 m^3

1.0 x 10^3 kg/m^3 (.002 m^3) = 2.0 kg