# A balloon with a volume of #2.00L# is filled with helium gas at a temperature of #27.0˚C# and a pressure of #1.20 atm#. How many grams of helium are in the balloon?

##### 1 Answer

May 28, 2017

#### Answer:

A mass of approx.

#### Explanation:

Given

.........Agreed........?

And, as is typical, we use the value of..........

The which has units that chemists typically use. And so we plugs in the numbers: