 Okay, so let's do this first one, this top one. So notice weight, weight percentages, sometimes, gentlemen, sometimes we'll be talking about things like, you know, these mixtures of metals, like in a ring, for example, they calculate the weight, weight percentage of a platinum gold ring with 14.00 grams of gold and 4.500 grams of platinum. So if you remember, we're calculating weight, weight percent, so what was the top here, do you guys remember? The mass of the solute, right? And on the bottom, the solution, okay? So, that information given to us in this problem, let's read it again. Calculate the percent weight, weight of a platinum gold ring with 14 grams of gold and 4.500 grams of platinum. So what do we have? What's given to us, the mass of two things, right? The mass of what? Well, gold is the what, the solute or the solution. Is it either one of those things? What is this? Let's just write it down. What's the mass of gold? 14.00 and what's the other thing that's given to us? That's the plan. So people want to tell me about the solution, tell me about it. So is the solution the one with the greater mass? It's the combined mass, right? Isn't the solute, what is the solution? It's a mixture of two things, right? So the weight of a solution of sodium chloride solution, do we take out the salt and weight just the water? So why would we take out the gold and weight just the platinum in this case? Why would we do that? Would we do that? These metal, metal mixtures are solutions, right? They're kind of like alloys or what, this one in particular, manality. But you've got to account for both things, right? A solution is a what, again? It's a mixture, right? It's not a single thing, right? So it's not gold, right? It's not platinum. It's what, in this case? Both, right? The combined thing, OK? So mass of the solute? Yes, what is it? 500 grams. Why do you say that's the solute? It's a smaller amount. Mass of gold, so it's going to be, am I doing 14 more, 5-0, and that's it? That's the solution, OK? And need, right? So we just plug in chug now. So mass of the solute has the solution, 24. Some people say percent weight, because that really emphasizes what you're talking about, as opposed to percent weight volume, or percent whatever. But if you think about these kind of metal mixtures, they're always percent weight weight, OK? This is good for you guys that are going into process technology and things like that, because you'll be seeing a lot of this kind of concentration unit, OK?