Question
Asked Oct 29, 2019
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The rate of diffusion of an unknown gas was measured and found to be 24.0 mL/min. Under the same conditions, the rate of diffusion of pure methane (CH4) gas is 47.8 mL/min. What is the molar mass of the unknown gas?

 

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Expert Answer

Step 1

According to the question to determine the molar mass of unknown gas

According to Graham’s law of effusion

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м, Rate, Rate М, Here, gas, Unknown gas gas2 Methane gas M2 Molar mass of CH M,Molar mass of unknown gas rate 24.0mL/min rate, 47.8mL/min

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Step 2

According to the equation you calcul...

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mL 24.0 min 16 unknown gas mL 47.8 min 16 0.5020= unknown gas 16 (0.5020) unknown gas 16 M unknown 0.252004 g -63.4 mole

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