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Where did they get the 24.79 from in the last line of the solution ? (1 Viewer)

jazz519

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The molar volume formula n = v/vm

Vm = 24.79 L/mol at 100 kPa and 25 C

This value is on data sheet
 

icycledough

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It's only 2 formulas to remember, both of which are on the reference sheet.

At 0 degrees (STP), 1 mole of ideal gas has a volume of 22.71L and at 25 degrees (SLC), 1 mole of ideal gas has a volume of 24.79L. Note that for both, the pressure has to be fixed at 100kPa. If you struggle to remember SLC and STP, think of SLC (standard lab conditions) as what the temperature in a school lab would most likely be, and common sense would say it's closer to 25 degrees than 0 degrees (well, I hope so).
 

jazz519

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First time I’ve ever heard about this…
It's basically pv=nRT but the pressure, temp and gas constant R are already subbed in. You can just use pv=nRT as well if you learnt it that way

That's how those two values on data sheet 22.71 and 24.79 are derived
 

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