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Often, it can seem daunting when you are asked to differentiate a function that looks particularly messy. However, it's really quite simple if you break it down in easy to manage steps....

deltaG= Gibbs free energy 

deltaG=deltaH - TdeltaS 

If deltaH= 150 kJ/mol and deltaS=2.1 J/mol we must first convert the deltaS into kJ/mol, this is done by multiplying by 1...

The best way to evaluate sources is to go back to the basics: Who, What, When, Where and Why?

Who wrote it and are they likely to be biased?

What have they written and does ...