Answer to Question #198487 in General Chemistry for gigi

Question

A student wants to measure the density of the unknown material using the displacement method.

He put 8.4 g of unknown material into the water initially at 45.4 ml, and the water level rose to 48.5 mL. What should be the correct density (g/cm3)of the unknown material from the following? 

Answer 1

D=M/V

D=8.4g/(48.5$-$ 45.4)

D=8.4g/3.1cm3

D=2.71g/cm3