Exam 3 Review

[LW]

HI, Professor Teets, I'm having a hard time distinguishing when we're dealing with absolute temperature and when it doesn't matter whether we use Kelvin or degrees Celsius. In one gas law question because R was not included in our final comparison we did not convert however in another we did. How do identify scenarios involving absolute temperature? Thanks I love your videos!

[nhando]

Hello Professor Teets, for problem 5 at 31:45 when it comes to the Laws of Thermodynamics does one side of the equations have to have a negative sign. Like q= -q, or sometimes it can be just q=q

[daisyvu]

Hello Professor Teets, for problem 8 at 49:50, on the last step when finding the enthalpy of formation for NH3, I am a bit confused about whether we should divide the result by the number of moles (4) or not. Since the result options are in KJ not KJ/mol
Thank you for making these sir!

[senenmando]

For question #6, if we’re being asked to find the heat capacity of the bomb calorimeter when we’re given the heat of combustion of a compound, mass in grams and the temp change how do we go about solving it?

[matthewalright]

I am back once again, test is tomorrow

[Shethewon]

at 35:4 calorimetry problem shouldnt delta T be in Kelvin ?