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25 sie 2015 · To find how much of air is occupied by molecules, we can multiply the number of molecules per unit volume by the volume of a molecule: $$n \times V = 2.5\times 10^{25} \text{ m}^{-3} \times 4\times 10^{-29} \text{ m}^3 = 0.001 = 0.1\%$$
5 sty 2010 · The formula can be used to calculate the number of moles of gases from a given volume or vice versa; Simply cover the one you want and the triangle tells you what to do
22 lut 2021 · Gas Volumes in Chemical Reactions. The ideal gas law can be used to calculate volume of gases consumed or produced. The ideal-gas equation frequently is used to interconvert between volumes and molar amounts in chemical equations.
21 wrz 2022 · Dalton's law can be used to calculate the amount of the desired gas by subtracting the contribution of the water vapor: \[\begin{array}{ll} P_\text{Total} = P_g + P_{H_2O} & P_g \: \text{is the pressure of the desired gas} \\ P_g = P_{Total} - P_{H_2O} & \end{array}\nonumber \]
25 kwi 2017 · The technique typically involves filling a glass column open on one end with water and then inverting the column and submerging the open end in a bowl of water. Columns built specifically for this purpose are called eudiometer tubes. The determined volume of a gas becomes useful only if the pressure of the gas is also known.
Sometimes you can figure out volume displaced by employing Archimedes' principle and/or static equilibrium. For example, suppose you have something floating on water, partially submerged. You know its weight, although maybe you don't know the volume submerged (which is the volume displaced). From Archimedes you know that the buoyant force is .
It works because displacement is the product of velocity and time. And in our graph when you multiply velocity and time you're basically multiplying two lengths in our graph and that gives us the area. And so that's the secret to calculating displacements and from a velocity time graph.
