Question

q18. a piece of metal with a mass of 150 g is placed in a 50 ml graduated cylinder. the water level rises from 20 ml to 45ml. what is the volume of the metal?
50ml
20ml
25ml
45ml

Explanation:

Step1: Identify volume change

The volume of the metal is equal to the increase in the water - level in the graduated cylinder.

Step2: Calculate volume

The initial water level is $V_1 = 20\mathrm{mL}$ and the final water level is $V_2=45\mathrm{mL}$. The volume of the metal $V = V_2 - V_1$.
$V=45 - 20=25\mathrm{mL}$

Answer:

25mL