Question

use the table below to answer the next three questions. (q.15 - q.16 - q.17)

	mercury	copper	silver	gold

q.15. a block that is made from an unknown substance has a mass of 2100 grams and a volume of 200 cm³. what substance is the block made of?

a) mercury
b) copper
c) silver
d) gold

Explanation:

Step1: Recall density formula

Density formula is $
ho = \frac{m}{V}$, where $
ho$ is density, $m$ is mass, and $V$ is volume.

Step2: Substitute values

Given $m = 2100$ g, $V = 200$ $cm^3$. Substitute into formula: $
ho = \frac{2100}{200} = 10.5$ $g/cm^3$.

Step3: Match with table

From table, silver has density 10.5 $g/cm^3$.

Answer:

c) Silver