Question

the volume of a certain gas is 29.3L at STP. what would be the volume of the same gas at 1.39 atm and 23 C?

Answer 1

We'll find the number of moles of substance at STP, then use that to find the new volume using PV=nRT

Answer 2

At STP,
T=273.15K
P=100000Pa
R=8.31J K-1 mol-1
Can you find the moles?

Answer 3

no :/ i suck at chemistry

Answer 4

Whoops, we'll use P=1 atmosphere for simplicity, and R=0.082L atm K^-1 mol^-1
If you used PV=nRT,
(1)(29.3)=n(0.082)(273.15)
n=1.31moles

Answer 5

Use back the formula PV=nRT but this time we use
P=1.39 atm
T=23 C (Remember to change to kelvin by adding 273.15 to 23C)
n=1.31moles
R=0.082L atm K^-1

Answer 6

ty