Homework Help: Chemistry

Posted by Sean on Saturday, February 2, 2013 at 12:28pm.

A gas occupies a volume of 502 cm3 at 20.0 C. What will be its volume at 106 C?

I understand that it follows Charles' Law where the correct equation is V1/T1=V2/T2. My teacher expects all units of volume to be converted to Liters and all temperature to Kelvins. Using Celsius provides the answer of 2.22 L while Kelvins provides 0.649 l. Using Celsius gives a much more reasonable answer since volume increases proportionately to temperature. Are her instructions using Kelvins justified? I have converted pressure to atmospheres and volume to Liters adn receive reasonable answers or answeres identical when not converting.

Chemistry - DrBob222, Saturday, February 2, 2013 at 1:42pm
You logic is good but logic based on false assumptions is useless and leads down the wrong path. It is true that volume is proportional to temperature BUT IT IS TEMPERATURE IN KELVIN and not temperature in celsius. That's why you convert C to kelvin. As for the conversion to L, that is a personal preference of your teacher. Using cc for V1 will give units of cc for V2. Using L for V1 will give units of L for V2. For this problem 0.649 L is the correct answer.

Answer this Question

Related Questions

Intro to Physics - (a) An ideal gas occupies a volume of 3.0 cm3 at 20°C and...
physics/chemistry - (a) An ideal gas occupies a volume of 1.0 cm3 at 20°C ...
Chemistry - A sample of gas occupies a volume of 500.0mL at .906 atm and 97 C. ...
Physics - (a) An ideal gas occupies a volume of 1.6-cm3 at 20°C and ...
chemistry - a sample of oxygen gas has a volume of 2730 cm3 at 21.0 C. At what ...
Chemistry - A sample of gas at 47 C and 1.03 atm occupies a volume of 2.20 L. ...
UT - At STP a sample of neon gas occupies 502 cm3. How many moles of neon gas ...
physics - 10 moles of a gas initially at temperature 300 K is compressed ...
Gas Law Chemistry - I need help on these two questions: If a certain gas ...
Chemistry - A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. ...

For Further Reading

First Name:
School Subject:
Answer: