# What would be the volume of 6.00 g of helium gas at STP?

##### 2 Answers

#### Explanation:

To answer this question, we'll need to use the Ideal Gas Law:

where

The question already gives us the values for

We also already know the gas constant. In our case, we'll use the value of

We can find the value for

Now, we can just plug all of these values in and solve for

33.6 litres

#### Explanation:

Assuming that helium behaves as an ideal gas, we know that a mole of ideal gas occupies 22.4 litres at STP.

The atomic weight of helium is 4 g/mol, so 6 g is 1.5 moles.

The volume occupied at STP, therefore, is 22.4 x 1.5 = 33.6 litres.