Well most gases are lighter then metals:D
Answer:
<h3>The answer is 5.0 g/mL</h3>
Explanation:
The density of a substance can be found by using the formula

From the question
mass = 100 g
volume = 20 mL
So we have

We have the final answer as
<h3>5.0 g/mL</h3>
Hope this helps you
The answer is C. If the Fours were all the way on the left it would make all of the zeros Significant figures.
A calculator .... that's the answer