 Okay, so let's try this one, we'll say it says write the chemical equation for the dehydration of magnesium, sulfate, and tetrahedral, so that's the epsilon-sulfate you're going to be using today. So by equation I, of course, make chemical equations, okay, so you recall all of the things that need to go along with the chemical equation like reactants, products, aeros, so on and so forth, okay, so when I write something like that, so what was it? Magnesium sulfate and tetrahedral, so I would suggest to you guys students as well, what I would always say to my students, I know you guys are some of my newer students, but whenever I was trying to learn how to dunk the basketball, it didn't help me to watch Michael Jordan dunk the basketball, you know, I had to go out and actually jump and try to actually dunk the basketball, so what I would say to you is it probably won't help you very much just sitting there watching me do it, so writing would help a lot, so I would suggest that you do it. Okay, so it's magnesium sulfate and tetrahedral, right? Yeah, that's a solid, and it said that we heated that stuff up. I mean this is not something that we necessarily need to, but we said that little triangle there means heat, and it's going to fully dehydrate it, so by dehydration that means losing all the water, right, so in this case when we lose all the water all we have left due to the law of conservation of mass, right, is the magnesium sulfate portion of it. So we have the magnesium sulfate portion left as a residue in our beaker, but we also have to account in the chemical equation for the water that was lost as a gas. Of course there were five of those for every one of them, so is everybody okay with doing something like that if I were to say write the dehydration equation for this particular hydrating, could everybody do that? So let's just write up here, this is the caffeine hydrating, specifically magnesium sulfate pentamin. Questions on that? Can I go?