# What volume does 22.4 g of chlorine gas occupy at STP?

##### 1 Answer

Jun 15, 2016

#### Explanation:

Because we are at STP, we must use the ideal gas law equation

- P represents pressure (must have units of atm)
- V represents volume (must have units of liters)
- n represents the number of moles
- R is the proportionality constant (has units of
#(Lxxatm)/ (molxxK)# ) - T represents the temperature, which must be in Kelvins.

Next, list your known and unknown variables. Our only unknown is the volume of

At STP, the temperature is 273K and the pressure is 1 atm. The proportionality constant, R, is equal to 0.0821

The only issue is the mass of

Now all we have to do is rearrange the equation and solve for V like so: