Question

(a ) what is the difference between the density and relative density of a substance ? (b) If the relative density of a substance is 7.1 what will be its density in SI units ?

Answer 1

Answer:

(a). Density is mass by volume of a substance whereas relative density is the density of given substance with respect to the density of water.

(b). It's Density in SI units will be 7.1 × 10^3 kg/m^3

Relative density = Density of substance / Density of water

7.1 = Density / 10^3

Density = 7.1 × 10^3 kg/m^3

Answer 2

Answer:

Density means mass of a substance in a unit volume

Relative density means density of a substance with respective another substance

Generally the other substance is taken as water

Explanation:

Given relative density is 7.1

then it's density in SI units is 7100 kg per metre cube

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