Question

A piece of brass is found to have a mass of 24.32 g. When placed in a graduated cyclinder with an initial reading of 5.60 mL the water level rises to 13.50 mL. What is the density of the piece of brass? Record your answer using sig figs and the correct unit. (Example: 2.3 g/mL)

Answer 1

Answer:

$\rho=3.1g/mL$

Explanation:

Hello,

In this case, considering that the density of a body is computed given its mass and volume:

$\rho =\frac{m}{V}$

Taking into account that the mass is 24.32 g and the volume is computed via the difference between the volume of the water with the brass and the volume of water by itself as follows:

$V=13.50mL-5.60mL=7.9mL$

The density of the piece of brass turns out:

$\rho =\frac{24.32g}{7.9mL}\\\\\rho=3.1g/mL$

Best regards.