1.5 m3 of water is mixed with 0.50 m3 of alcohol. The density of water is 1000 kg m–3 and the
density of alcohol is 800 kg m–3.
What is the density of the mixture with volume 2.0 m3?
A 850 kg m–3 B 900 kg m–3 C 940 kg m–3 D 950 kg m–3

Question

1.5 m3 of water is mixed with 0.50 m3 of alcohol. The density of water is 1000 kg m–3 and the
density of alcohol is 800 kg m–3.
What is the density of the mixture with volume 2.0 m3?
A 850 kg m–3 B 900 kg m–3 C 940 kg m–3 D 950 kg m–3

anonymous · Answer

density = mass/volume          right

anonymous · Answer

so here mass of  1.5 m3  of water is 1.5x1000=1500 kg
and mass of 0.5 m3 of alcohol is 0.5 x 800 =400kg
hence mass of total 2.0m3 of mixed liquid is 1900 kg
hence required density = 1900/2 = 950 kg m–3