 So this problem asks us if an equal amount of helium and argon are placed in a porous container and allowed to escape, which gas will escape faster and how much faster? So what I did is I took the liberty of writing down the molar masses of each one of these gas prior to doing this problem. And I got the molar mass from where? Periodic table, right? So in order to do this problem, I have to understand that it wants us to use grams of fusion law. So what is that? Well, it's the rate of gas 1 divided by the rate of gas 2. That equals the square root of the molar mass of gas 2 to the molar mass of gas 1. So it's asking us, which gas will escape faster? So that's the first question. Which gas would escape faster? Can we just look at these gases and know? Which one would it be? Helium, why would you say that? It's much lighter. It's molar mass is smaller, right? Or if we're looking at its molecular weight, yeah, it's a much less heavy molecule, right? So the other question, how much faster is referring to what is this ratio here, right? So this to 1, OK? So in other words, let's rearrange this, or let's make this equation to say helium and argon here, OK? So rate of helium we'll put on top. Rate of argon we'll put on the bottom. Why did I put helium on top? Because we know that's going to go faster than argon. So this will be a bigger number than this one. Does everybody understand what I'm saying? So this is going to be then argon, and this will be helium, OK? So notice this problem didn't give us any rate information at all. It just asks us how many times faster is helium going to be? So what it's really looking for is, like I just said, this ratio here. Is everybody OK with that? So in other words, what we need to figure out is the square root of the molar mass of argon divided by the molar mass of helium. What is that? And in this case, it says how much faster? So we'll just say that ratio, OK? Or we could say that was x or something like that. So in order to do that, well, we just plug our values into this equation. So 39.95 grams per mole divided by 4.00 grams per mole. And we'll use these numbers as significant figures, even though you usually don't from the periodic table since we don't have any other numbers. We'll just use these ones. Cancel out grams per mole, of course. So when we do this, take 39.95 divided by 4.00. And then take the square root of that answer. And I get 3.16, OK, with no units, right? So what is that telling us? So really, it's a 3.16 to 1 ratio, right? Does everybody understand what I'm saying here? Where I'm saying that helium's rate of effusion is 3.16 times faster than the rate of effusion of argon. Does that make sense? So if argon's rate is 1, whatever units we're using, helium's is going to be 3.16. Does that make sense? So this is the ratio of the rate. And that gives us, like what this says, how many times? Makes sense to everybody? Any questions on that? You sure? Questions? No questions?