The specific gravity (or relative density) of gold is 19. Find the mass of a gold body that displaces 25 cm³ of water when immersed in it.

Given, specific gravity of gold = 19

⇒ Relative density of gold = 19

∴ Density of gold = 19 g cm^–3.

When the gold body is immersed in water, it displaces 25 cm³

⇒ Volume of the gold body = 25 cm³

∴ Mass of the gold body = (volume) (density)

= (25 cm³) (19 g cm^–3)

= 475 grams