What is The mass of an object if it's density is 12.00 g/mL and it's volume is 3.0 mL

36

Explanation:

The formula for density is p=m/v. So we have to rearrange the formula.

It would look like this:

12.00 = m/3.0

From we would just solve by bringing the 3.0 to the other side and multiplying that to 12.00. Which gives us 36

"the periodic table is arranged in order of atomic number."

b.false that your answer