Question

The mass of water displaced by a 20 g block of wood is…

A. 10g
B. 20g
C. 5g
D. 40g

Answer 1

This question involves the concepts of density and mass.

The mass of water, displaced is "B. 20 g".

MASS OF DISPLACED WATER

First, we will find out the volume of the woodblock by using the density of wood:

$\rho_{wood} =\frac{m}{V}$

where,

• $\rho_{wood}$ = density of wood = 1 g/cm³
• m = mass of wood = 20 g
• V = Volume of wood = ?

Therefore,

$1\ g/cm^3 = \frac{20\ g}{V}\\\\V=\frac{20\ g}{1\ g/cm^3}$

V = 20 cm³

Now, this is the same volume as the volume of water displaced by this block of wood. Hence, using the density of water, w can find the mass of water displaced:

$\rho_{water}=\frac{m}{V}\\\\\rho_{water}(V)=m\\m= (1\ g/cm^3)(20\ cm^3)$

m = 20 g

Learn more about density here:

https://brainly.com/question/952755