Jill has a gel pen the gel pen has a mass of 8g and a valine of 2cm3 what is the density

Explanation:

The density of a substance can be found by using the formula

From the question

mass = 8 g

volume = 2 cm³

We have

We have the final answer as

Hope this helps you

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

it means there are 3 atoms of oxygen