Question

Relative Density of gold is 19.5g.The Density of water is 1000kg/m power-3 .Find the density of gold in SI unit and in g/cc.

Answer 1

R.D.=density of gold/density of water at 4°C.
19.5=density of gold/1000
Density of gold=19.5*1000=19500Kg/m^3

OR Density of gold=19500/1000
=19.5g/cc

Answer 2

Relative density is the ratio of density of substance to the density of water.


Density of water = 1000 kg/m³

Relative density = $\frac{density. of. substance }{density. of .water }$

Lets take the density of gold as " x"

19.5 = $\frac{x}{1000 }$

x = 19.5 × 1000
= 19500 kg/m³

SI Unit of density is kg/m³



∴ density of gold = 19500 kg/m³

1 kg/m³ = 0.001 g /cm³
19500 kg/m³ = 19.5 g/cm³

density of gold = 19500 kg/m³ = 19.5 g/cm³