Recent content by lustrog

Just read the sticky. Perhaps this should have been in the HW section. But it is a conceptual question. I just pulled a relevant textbook question to demonstrate my areas of confusion about free energy.

I would have answered it the way Feynman explained it (see: http://student.fizika.org/~jsisko/Knjige/Opca%20Fizika/Feynman%20Lectures%20on%20Physics/Vol%201%20Ch%2004%20-%20Conservation%20of%20Energy.pdf). That is to say, energy is just something we have discovered in nature that is always...

I'm given a fuel cell that uses methane as fuel: (CH4) + 2(O2) --> 2(H2O) + (CO2) And I'm asked to find (a) the electrical work I can get out for each mole of methane, and (b) the amount of waste heat produced. I understand that ΔG is defined as the amount of useful non-mechanical work...

lol. yes i guess it really is that simple. thanks for helping me along though.

much appreciated, mark44. one of the things that bothered me is why you can treat the x's and y's of each equation as the same value. but your response put me on the right track to clearing that up too, because if you think about it in two steps it makes sense. (if anyone else has been...

why does adding equations solve the system of equations? I've taken matrix algebra but, to be honest, was too bashful to ask such a simple question. :P