# A piece of platinum metal with a density of 21.5 g/cm^3 has a volume of 4.49 cm^3. What is its mass?

##### 1 Answer

Jun 6, 2017

#### Answer:

#### Explanation:

Use the formula for density but rearrange the formula to solve for mass:

Given the information we can write a formula like so:

We are trying to find the mass so we can rewrite the equation such that we solve for

We could check this answer by substituting our newly found mass and given volume to find density. In doing this, we should get

Check: