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Calc heat functions

Posted: Tue Feb 09, 2016 2:18 pm
by Mya Majewski 1L
When do you know when to use q=-q, mcdeltaT=-mcdeltaT, or q=ndeltaH + mcdeltaT????

Re: Calc heat functions

Posted: Tue Feb 09, 2016 8:12 pm
by Chem_Mod
q=-q just means that the heat is being lost/gained by a certain component and gained/lost by another component. You would use mC and/or n depending on whether or not the components in question are going through phase changes, with which you use n, or are just simply increasing the temperature (ie. liquid going from 273K>373K) use mC. If both a phase change and an increase in temperature are occurring use both.