 Okay, so like what we were saying, if you've got a neutral solution, it's going to be a 7, an acidic solution is going to be below 7, pH, and a basic solution is going to have a pH above 7, okay? So in this problem, the second part of the question asked us, is this solution acidic, basic, or neutral? Okay? Well, we didn't even really have to finish this problem to determine that part of the problem because we already got the H3O plus concentration here, okay? So remember, pH equals the negative log of the H3O plus concentration, okay? So when we look at that, so this little P here in chemistry, that always means negative log of, I don't know what that noise was, very interesting to have in a chemistry class. So whenever you see this P, it's the negative log of, okay? So where it means H, it's just saying, well how many protons, okay? So has anybody got any answer yet? What is it? It's 5. It's 5, yeah. Oh. How did I figure that out? How'd you figure that out? Okay, so you just looked up there, that's it, okay? If it's 1 times 10 to the negative 5th, it's going to be 5, okay? So if this is 1 there, then you can just plug that down there. But if it's not, then you've got to put it in your calculator. I would suggest you guys put these into your calculator because most people don't do these until the test and then they realize that they have no idea how to use their calculator, okay? So for those of you who are like looking at me with the most confused looks or nonchalant looks but refusing to take your calculators out, I would do it right now. And calculate it. Have you calculated it yet? Do it. No, just do this part now. Make sure you can plug in negative logs, very important, okay? If you don't know how to do it on your own, okay? Yeah. If you can't do it on your calculator, then you won't be able to do it on the test. He knows how to do it, so have him show you if you can't do it on your own. Can I kill this one?