Combined Gas Law...
Need V1...
P1=650 torr
T1=373*K
P2=900 torr
V2=225 mL
T2=423*K
Im not just trying to cheat, im seriously having trouble with these problems. Will give 10 points correct answer!!! Help
2006-12-03 10:35:04 · 3 answers · asked by B-Rad 4 in Science & Mathematics ➔ Chemistry
P1V1/T1 = P2V2/T2
V1=P2V2T1/T2P1
V1=900x225x373/(423x650)
V1=274.71 mL
2006-12-03 10:56:36 · answer #1 · answered by Anonymous · 0⤊ 0⤋
No offense, but are you serious? How will you learn if you do not try?
Look. Put what you have on one side and what you don't need on the other of PV=nRT.
You need P, V, and T.
PV/T=nR
nR is constant, so you can replace it will your final values.
P1V1/T2 = P2V2/T2
Solve for V1:
V1=P2V2T2/T2P1
I really hope this helps. PRACTICE over and over and you will be excellent at these problems. They are easier than you think..
2006-12-03 18:40:39 · answer #2 · answered by Hadeer S 1 · 0⤊ 0⤋
according to equation of state
P*V / T = const
=> P1*V1/T1 = P2 * V2/T2
=> V1 = T1 * P2 * V2 / (P1 * T2) = 274.7 mL
2006-12-03 19:09:08 · answer #3 · answered by James Chan 4 · 0⤊ 0⤋