 Okay. So let's try this first one. Is everybody cool? So let's try this first one. If 15.00 grams of sucrose, so already we have something, right? So let's write down what we have already. The mass of sucrose, right? And what is it? 15.00 grams. It's dissolved in 200 point milliliters of solution. So that's giving us the volume of solution, right? But is it giving it to us in liters? No. Okay. So we've got the volume of the solution. And what was that again? 200 with a decimal point there, mills, right? But we want to convert that to liters. We already know how to do that. We'll wait for a second to do that. Let's write down everything we got. And then it says, so let's repeat the question again. If 15 grams of sucrose and then it gets the molecular weight at 342.30 amu is dissolved in 200 milliliters of solution, calculate the molarity of the sucrose solution, okay? So how would we do that? Well, first thing we know, we know we need to convert the volume to liters, right? So we can do that fairly easily by multiplying that by the conversion factor that we all know, right? What do we put on top here? One liter, right? And down here? Very good, guys. 1,000 milliliters, right? Convert our cancel-cancel. And what do you get? We can do it that way. 0.00, right? Please. And that's the same thing as the number of moles. Now, how would we convert the mass to the number of moles? The molar mass, right? The molar mass. And it's given to us the molecular weight, right? Is that the same thing as the molar mass? You guys can talk to me. Talk to me. Is it the same thing as the molar mass? Yeah. No, the number is the same, right? Is the number the same? How can you not talk to me anymore? How about this? Let's think about this. What needs to be down here? Grams. Grams, okay. We know that. Okay. What needs to be up here? The number of moles. So do we know anything that converts grams and moles? It's not the molecular weight, because that's AMUs, right? Is that the same? It's the molar mass, right? It's the same number, but different units, right? What are the units of molar mass? Grams per mole, right? Grams per mole, right? That's how you convert grams to moles, right? You guys, you guys remember this. Remember this from chapter, what was it? Three or something like that? So, let's do, let's write the molecular weight down. What does it say? The molecular weight is 342.30. Okay, so 15 divided by 342.3. What do you guys get? What do we put on top? Anybody have the volume? A little this morning. We're all proud of you. Is that what you got, at least? Right? Yes. Yes, great. Good job. Are there any questions? So the next one will probably go smoother, since you guys know the rigmarole. And honestly, this one is probably a more advanced one, because of course we had to convert mass to moles, but you guys don't have to do that.