Question

An IGCSE student thinks it may be possible to identify different rocks (A, B and C) by measuring their

Answer 1

Answer:

See the answer below

Explanation:

a. The volume in the first measuring cylinder reads 70 $cm^3$ while that of the second reads 95  $cm^3$. Hence;

V1 = 70  $cm^3$

V2 = 95  $cm^3$

b. An object will always displace its own volume in a liquid. Hence:

Volume V of the rock sample = V2 - V1

   = 95 - 70 = 25  $cm^3$

c. Mass of A = 102 g

   Volume of A = 25  $cm^3$

Density = mass/volume

Hence, density of A = 102/25 = 4.08 g/$cm^3$