Question

a 14.24 gram rock is dropped into a graduated cylinder containing 5.7 mL of water the final volume reading on The Graduate after the rock sinks is 17.3 ml what is the volume of the rock with the correct significant digits

Answer 1

The volume of water in the graduated cylinder is 5.7 mL, volume increases to the value 17.3 mL when a 14.24 g of rock is dropped into it.

The increase in volume is due to the added volume of rock. Thus, volume of rock can be calculated by subtracting initial volume from the final volume as follows:

$V_{rock}=V_{final}-V_{initial}$

On putting the values,

$V_{rock}=17.3 mL-5.7 mL=11.6 mL$

For correct significant figures, volume should be in 2 significant figures.

Therefore, volume of rock will be 12 mL.