# A spherical balloon can hold 1.2 liters of helium. The balloon has a mass of 26 milligrams when empty. Helium has a density of 0.1785 grams per liter. What is the mass of the balloon when it is filled with helium?

##### 1 Answer

May 21, 2016

#### Explanation:

So, we need first to calculate the mass of the helium in the balloon.

We are told that there are

But

Given this mass, the mass of the balloon is this mass + tare value