If the relative density of a metal is 19. What will be the mass of 20cm of the metal when immersed in water

RD=19
Mass=20cm³

you want mass. So, since density = g/cm^3, you need to multiply density times volume to get mass.

So, do the math...

180g

To find the mass of the metal when immersed in water, we need to consider the relative density and the volume of the metal.

Relative density is a measure of how dense a substance is compared to the density of another substance. In this case, the relative density of the metal is given as 19.

To determine the mass of the metal, we need to use the formula:

Mass = Volume x Density

However, the density of water is 1 g/cm³, and the relative density is given as 19. Therefore, the actual density of the metal can be calculated by multiplying the relative density by the density of water.

Density of metal = Relative density x Density of water
Density of metal = 19 x 1 g/cm³
Density of metal = 19 g/cm³

Now, the mass of the metal can be calculated by multiplying the volume of the metal by its density:

Mass = Volume x Density
Mass = 20 cm³ x 19 g/cm³

Therefore, the mass of 20cm³ of the metal, when immersed in water, is 380 grams.