 Okay, so this is number seven of the practice test, a sketch of potential energy diagram showing the effect of increasing the temperature for an endophermic reaction. So the first thing you want to remember of course is what a potential energy diagram is, right? So if you recall, it's the two axes here, this y-axis here is going to be your energy, so that's potential energy. And this is the reaction over time. So this is time zero, it should keep going, it's time whatever. So now you want to remember that an endothermic reaction has the products at a higher energy than the reactants, right? So the reactants are down here where the products are up here. So if you remember, delta for an endothermic reaction delta H equals a positive number. Okay, so the regular potential energy diagram just has this type of a curve with energy of activation being from the reactants to the transition state up there. So if you increase the temperature, so that's what we're trying to do here, if we increase the temperature, so remember temperature is another form of energy, right? So it increases the energy as well, so if you're increasing the temperature, you're actually increasing E. So R is at a low energy state, right? So when you increase E, you're actually bringing R up here or somewhere up there. You could even bring it up high up here to make it an exothermic reaction, remember? So that's like you've got delta G equals delta H minus T delta S, right? So the temperature does play a factor in determining whether the reaction is spontaneous or not, right? So you can increase the temperature and your new reaction curve would be something like that, thereby lowering your activation energy, right? So that would be your new activation energy. So that's what you do.