How to differentiate when to use certain formulas
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How to differentiate when to use certain formulas
When approaching a problem are there any keywords that will help identify what equation(s) to use? And just to make sure, which equations should we know how to use
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- Posts: 53
- Joined: Fri Sep 29, 2017 7:07 am
Re: How to differentiate when to use certain formulas
I think some of the main equations we need to know are
q=nC(deltaT)
w=-P(deltaV)
(deltaU)=q+w
q=nC(deltaT)
w=-P(deltaV)
(deltaU)=q+w
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Re: How to differentiate when to use certain formulas
Here are the big keywords/hints for the q and w equations.
"Final Temperature" usually suggests using q=mCΔT, since ΔT is Tfinal - Tinitial.
Similarly, when a final and initial volume is given or mentioned, you are likely to use w = PΔV
"Final Temperature" usually suggests using q=mCΔT, since ΔT is Tfinal - Tinitial.
Similarly, when a final and initial volume is given or mentioned, you are likely to use w = PΔV
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- Posts: 97
- Joined: Fri Sep 29, 2017 7:04 am
Re: How to differentiate when to use certain formulas
I think knowing the formula for work,change in internal energy, change in enthalpy, and calculation of heat are most important that many other equations can be derived from those.
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