The water level in a metric measuring cup is 0.75 L before the additio

1.	The water level in a metric measuring cup is 0.75 L before the addition of a pebble weighing 150 g. The water level after submerging the pebble is 0.82 L. Determine the density of the pebble.
Answer» Volume displaced by the pebble = (0.82 – 0.75) L 0.07 L = 70 mL. Mass of the pebble = 150 g Therefore, density of the pebble is, Density = \(\frac{Mass}{Volume}\) = \(\frac{150}{70}\) = 2.14 g mL^–1

The water level in a metric measuring cup is 0.75 L before the addition of a pebble weighing 150 g. The water level after submerging the pebble is 0.82 L. Determine the density of the pebble.

Answer»

Volume displaced by the pebble

= (0.82 – 0.75) L

0.07 L = 70 mL.

Mass of the pebble = 150 g

Therefore, density of the pebble is,

Density = \(\frac{Mass}{Volume}\)

= \(\frac{150}{70}\)

= 2.14 g mL^–1