Answer to Question #22401 in Inorganic Chemistry for Talia jackson
What is the number of moles in 500 L of He gas at STP?
If you are given STP, you need to use temp and pressure in the calculation
PV = nRT
P = 1.00 atm
V = ????
n = 1 mol
R = 8.206 x 10^-2 L atm/mol K
T = 273.15 K
rearrange for V
V = nRT/P
plug in the above and you will get 22.4 L
If1 mole occupies --------------22.4 liters at STP
X mol will occupy 500 L atSTP
X =500L*1mole/22.4L = 22.3 mol