cava s2d12 303 1.13 Graham's law of effusion
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| [...]: movement of gas molecules from areas of high concentration to areas of low concentration | diffusion: movement of gas molecules from areas of high concentration to areas of low concentration
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| [...]: movement of gases through a tiny pore or opening | effusion: movement of gases through a tiny pore or opening
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| HS Chemistry courses love the word effusion, but it really just means diffusing [...]. | HS Chemistry courses love the word effusion, but it really just means diffusing out of an opening.
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| Graham's law of effusion: The rate of effusion is [-ly] proportional to the square root of the molar mass of the gas particles. | Graham's law of effusion: The rate of effusion is inversely proportional to the square root of the molar mass of the gas particles.
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| Graham's law math: [...] | Graham's law math: Rate gas1 / Rate gas2 = Sqrt{ mass gas 2 } / sqrt{ mass gas1 }
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| Notice that in Graham's law, gas 1 is on top on the left, but on [...] on the right. | Notice that in Graham's law, gas 1 is on top on the left, but on bottom on the right.
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| Although Graham's law describes *effusion* rates, it can also be used to describe *[...] rates* and sometimes test-writers throw *[...] rate* questions at you and expect you to know that Graham's law relates to both. | Although Graham's law describes *effusion* rates, it can also be used to describe *diffusion rates* and sometimes test-writers throw *diffusion rate* questions at you and expect you to know that Graham's law relates to both.
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| Graham's law is used for BOTH effusion and [...] rate problems, even though his law is called Graham's law of *effusion*. | Graham's law is used for BOTH effusion and diffusion rate problems, even though his law is called Graham's law of *effusion*.
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| Graham's law of effusion: The rate of effusion is inversely proportional to the [...] of the molar mass of the gas particles. | Graham's law of effusion: The rate of effusion is inversely proportional to the square root of the molar mass of the gas particles.
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| Graham's law of effusion: The rate of effusion is inversely proportional to the square root of the [...] of the gas particles. | Graham's law of effusion: The rate of effusion is inversely proportional to the square root of the molar mass of the gas particles.
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