Of course, I have toДo that on both sides. This, this cancels with that, so I have just V two Multiplying it times this is so that this cancels with And so we have everything we need in order to solve for V two, in fact, we can solve for V two before we even put in these numbers, if we multiply both sides of this equation times T two over P two, and the reason why I'm Subtract, it's going to be in my head, 229 Kelvin. Is going to be 296 Kelvin, and then what is T two? Well, T two is negativeД¤4 degrees Celsius, if we add 273 to that, let's see, that's going to be, if we In terms of Kelvin, so to convert 23 degreesД¬elsius into Kelvin, you have to add 273, so this More of an absolute scale, and deal with temperatures Starting temperature is at 23 degrees Celsius, but you have to think on Least, what is T one? Well, they tell us the Want us to figure out, what is the volume of theД«alloon just before it bursts? So I'll put a little question mark there. Now, what is V two? Well, that's what they

6.51 Torr, now, what is V one? Well, they tell us that right over there, that is 1.85 times 10 to the third liters. Torr, much lower pressure, which makes intuitive sense,

765 Torr, and what's P two? That's the pressure just before it burst, and they tell us it's 6.51 And so what are these different variables? Well, let's first think about P one, so pressure at time one That P one times V one over T one is equal to P To the number of moles times the ideal gas constant, which also needs to beД®qual to your pressure right before it bursts times the volume right before it bursts,Дivided by the temperature right before it bursts, or you could just say Over your starting temperature is going to be equal Or another way to think about it, you could say your starting pressure times your starting volume Temperature could change, but because this wholeД®xpression on the left has to be constant, that could So one way to think about it is that PV over T has to be constant. And in this example, as this balloon goes to higher and higher altitudes, the number of moles does not change, and the ideal gasД¬onstant does not change. And so one way to thinkДЄbout it is if we divide both sides by T, you get These variables changing, and how that might affect other variables. Now, what's different about this example is that they aren't just giving us several of these variables and asking us to solve one of them, they're talking about Us a bunch of pressures, volumes, and temperatures, and the ideal gas law deals with that, it tells us that pressure times volume is equal to the number of moles times the ideal gasД¬onstant times temperature. All right, so you mightДЄlready have an intuitive sense that this has something toДo with the ideal gas law, because they're giving What is the volume of theД«alloon just before it bursts? So pause this video and see Negative 44 degrees Celsius and the pressure is 6.51 Torr. The balloon travels for two hours before bursting at anДЄltitude of 32 kilometers, where the temperature is In order to profit much, double the cost of materials.That a weather balloon containing 1.85 timesДЎ0 to the third liters of helium gas at 23 degreesД¬elsius and 765 Torr is launched into the atmosphere. It is encouraging that a sketch of the project is part of the project plan. Filipinos have in ability and craftmanship. Expect success for a product that is carefully planned. Itemize the steps to do before you start the project. Designing project plan helps you to become conscious in any project. Know the appropriate tools and materials needed. Expensive materials are used when making the project. In doing the project, benefits that we can get out of the product must be considered. Making and following the project plan got a good result in the project being made.

Preparing all materials needed is the first step in doing the project. Observe health and safety measure while doing the project.

Making project plan is done after finishing your project. Roduct is important before mass production. Write your answer on the space provided before each number. Write TRUE if the sentence is correct and FALSE if it is wrong. P2 = 1140 Torr (1 torr = 0.00131579 atm) = 1.5 atmД®xample Problem And solution Of combined gas laws

Combined with Boyle's law and Gay Lussac's law.

When the volume is not changed, the gas pressure is proportional to its absolute temperature There are several gas equations in various processes:ДЄt constant temperature, the gas volume is inversely proportional to the pressure applied Temperature to reduce volume to 1.75 L at 1140 torr = 496.65 K Further explanation

765 mmhg to atm