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I am preparing for MCAT from TPR and Kaplan and they both different eqation for the 1st law of Thermodynamics.
In TPR
Change in Internal E = Q - W
and IN kaplan it says
Change in Internal E = Q + W
I also noticed that they both different signs for the work done by the system on its surroundings
In TPR W is Negative and in Kaplan W is positive.
This is pretty confusing I think TPR is right because I think work done by the system that means the energy is lost so it has to be negative (just like enthalpy is negative)
Any suggestion on my opinion.
In TPR
Change in Internal E = Q - W
and IN kaplan it says
Change in Internal E = Q + W
I also noticed that they both different signs for the work done by the system on its surroundings
In TPR W is Negative and in Kaplan W is positive.
This is pretty confusing I think TPR is right because I think work done by the system that means the energy is lost so it has to be negative (just like enthalpy is negative)
Any suggestion on my opinion.