Posted by Sarah on Monday, November 12, 2012 at 7:25pm.
A 3.80 L cylinder contains 6.83 g of methane, CH4, at a pressure of 3320 mmHg. What is the temp. Of the gas?
I mainly have problems being able to tell which gas law equation I need to use when asked these types of questions and then being able to rearrange the equation to find my answer that I need. If there an easy way to do this or to be able to tell?
Thank you.

Chemistry  DrBob222, Monday, November 12, 2012 at 8:25pm
If you have two sets of conditions, the easy gas law to use is the
(P1V1/T1) = (P2V2/T2)
If you don't have two sets of data you almost certainly must use PV = nRT. Many times, and this problem is one of them, the problem gives grams so you calculate mols = n = grams/molar mass.
Also,if you mean by "rearranging the equation to find my answer" as rearranging the equation FIRST, I wouldn't do that. I would substitute into the equation you want (either of the two equations above), then rearrange the numbers to solve for the unknown.
For this problem you want PV = nRT.
P must be in atm (mmHg/760), n = mols = grams/molar mass, when you solve for T the answer will be in kelvin.
Answer This Question
Related Questions
 Chemistry  A 3.80 L cylinder contains 6.83g of methane, CH4, at a pressure of ...
 Chemistry  In an experiment, you fill a heavy walled 5.00 L flask with methane ...
 Chemistry  I'm trying to find the dry gas pressure of H2 in mmHg. The ...
 Chemistry  Calculate the ratio of moles of CO2 produced to moles of the ...
 Chemistry  Calculate the ratio of moles of CO2 produced to moles of the ...
 chemistry  Question: how to solve for a 28.4 L sample of methane gas is heated ...
 chemistry  a 10.0L ballon contains helium gas at a pressure of 655mmHg, what is...
 Chemistry 105  A gas mixture with a total pressure of 745 mmHg contains each of...
 Chemistry  Natural gas is almost entirely methane, CH4. What volume of natural ...
 chemistry  A compressed gas cylinder contains 1.00 into 1000 g argon gas . the ...
More Related Questions