Avogadro\'s law states that the volume of a gas at a given temperature and press

Question

Avogadro's law states that the volume of a gas at a given temperature and pressure is directly proportional to the number of moles of the gas. Click on the image to explore this simulation which demonstrates the principles of Avogadro's law. In the simulation. You should see a container with a pressure cylinder. You can set the temperature from the dropdown list provided in the simulation. The graph displayed on the fight side of the container indicates the relationship between the volume in liters (L) and the number of moles. the text box provided in the lower right corner of the simulation gives the value of pressure p. Volume. V and number of moles n. Imagine that the gas shown in the simulation is an ideal gas such as helium. Notice that the final number of moles of gas is 1.00 mol for each experimental run. You can and the final volume of the gas using the y axis of the graph shown. Consider an experimental run at 273 K where the initial number of moles (n_s) is actua

Explanation / Answer

Part B) Initial Volume V1 = nRT/P

with P = being constant

V1 = 1 x 0.08205 x 273 = 22.40 L

So final volume,

V2 = 2 x 22.40/1 = 44.80 L

Part C) For final moles of O2 in vessel = 1.36 mol

Final volume of O2 in vessel V2 = 1.36 mol x 4 L/0.864 mol = 6.30 L

So we have to add = 6.30 - 4 = 2.30 L of O2 gas in the vessel

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