Question

5. The mass of an iron ball is 800 g. What should be the volume of the ball if the density is 7.87 g cm
Also find the density in the SI unit and the relative density.​

Answer 1

Answer:

volume of iron ball = 101.65 cm^3 and density of the iron ball in SI unit is 7.87*10^3 kg/m^3 and the Relative density is 7.87

Explanation:

mass of iron ball is 800g

density of iron ball is 7.87 g/cm^3

d=m/v

v=m/d

v=800/7.87= 101.65cm^3

therefore, volume is 101.65 cm^3

1g/cm^3= 10^3 kg/m^3

7.87 g/cm^3= 7.87* 10^3 kg/m^3

therefore, density in SI unit is 7.87*19^3 kg/m^3

Relative density= density of the substance/ density of water at 4°C

RD= 7.87/1

therefore, RD= 7.87