Question

Find the density of a substance if its mass is 180gm and volume is 45cc

Answer 1

Density is mass per unit volume

The SI unit of mass is kg

So 180 gram is equal to 0.18 kg

SI unit of volume is cubic metre

1 cubic centimetre is equal to 10^ -6 cubic metre

So 45 cubic centimetre is equal to 45 ×10^ -6 cubic metre.

Now density is equal to mass by volume

So density is equal to 0.18 × 10^6/ 45

That is equal to 4000

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