I am a sophomore in high school, just started honors chemistry this year, and I'm having trouble figuring out what formula to use for this question, and how exactly to do so:
If a gas has an original volume of 6 L, an original temperature of 298.15 K, and an original pressure of 1 atm, what would the volume be at a temperature of 288.15 K and a pressure of .92 atm?
So far I thought that it would probably be best to use the formula, pV=nRT , but I have not been able to figure out what exactly R is. I know that it is the constant, but what is the value and/or how is it calculated? I have also been asked to use this formula in other questions, and I don't quite understand the value of R. If someone could help work me through this, that would be wonderful.