Chem Masters..help please! What pressure will a mixture..
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Chem Masters..help please! What pressure will a mixture..

[From: ] [author: ] [Date: 11-05-25] [Hit: ]
0 L at 50 degrees C?-Remember that a gas (ANY gas) will exert one atmosphere of pressure at 0°C in a 22.4L container.22.4L is the number to remember.You have 1.......
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What pressure will a mixture of 1.25 mole of methane, CH4, and 0.575 mole
of propane, C3H8, exert with a volume of 13.0 L at 50 degree's C?

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Remember that a gas (ANY gas) will exert one atmosphere of pressure at 0°C in a 22.4L container. 22.4L is the number to remember.

You have 1.25 + 0.575 = 1.825 mole, so that would be 1.825 atmospheres at 0° in 22.4L.

But, the volume is 13L, so that's 1.825 · 22.4 ÷ 13 ≈ 3.145 atmospheres at 0°.

But, the temp. is 50°C, not 0°. Convert to °K by adding 273°. That's 323°K rather than 273°K, so that's ~3.146 · 323 ÷ 273 ≈ 3.72 atmospheres (rounded to 3 significant digits to match the input)
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