5. A gas sample collected at 35.0?C and a pressure of 710 torr has a volume of 200 mL. The temperature and pressure are changed, and the gas is compressed to 150 mL. The new temperature is 40.0?C, what is the new pressure?
1.27 atm
1.08 x 103 torr
541 torr
0.712 atm
2007-09-25 17:27:39 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Since the process is closed to additional or less gas, you can write
PV/T |1st condition = PV/T |2d condition
Remember to add 273.2 to each temperature.
Eyeballing the info, I'd choose 1.27 atm (760 torr=1 atm.)
2007-09-25 17:35:56 · answer #1 · answered by cattbarf 7 · 0⤊ 1⤋
(Your question states that the Temp. and Pressure are changed...They all change.
710torr x 200mL x 313K (40°C) = P2 x 150ml x 308K (35°C).
= 1.27atm (965.2 torr)
2007-09-26 00:38:57 · answer #2 · answered by Norrie 7 · 0⤊ 0⤋