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Question

Equal masses of water and a liquid of density 2 g/cm3 are mixed together, then the mixture has a density of 4n g/cm3 , where n is ___.

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Solution

Let the mass of water taken be m grams.

Density of water = 1 g/cm3

So, its volume = m1 = m cm3

Mass of the liquid = m grams

Density of the liquid = 2 g/cm3

So, volume of the liquid = m2 cm3

Density of the mixture = Mass of the mixtureVolume of the mixture=m+mm+m2=43 g/cm3

So, n = 3


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