Question

I have an object with a mass of 14g and a volume of 2 mL. What is the density of the object?

Answer 1

d=m/v
D= 14/7
D= 2 g/mL

Answer 2

7g/mL

Step-by-step explanation:

Density is a measure of mass per volume.

Density Formula

The density formula is
`\displaystyle D=(m)/(V)` where m is the mass in grams (g) and V is the volume in milliliters (mL). The way I learned the formula was that the m over the V looks like a heart when written out.

We can plug the mass and volume we were given to solve for density.

• D =
  `(14g)/(2mL)`

`(14)/(2)` equals 7. So, the density must be 7 grams per milliliter (g/mL).

Density Units

The units for density are important. You will not get the correct answer if you do not include your units. There are multiple ways to express density, but it is most common to have g/mL.

Additionally, density should always have the volume measurement in the denominator. This means that density will never be written in mL/g.