Asked Oct 29, 2019

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?



Expert Answer

Step 1

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

According to Graham’s law of effusion


Image Transcriptionclose

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

Step 2

According to the equation you calcul...


Image Transcriptionclose

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


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Combining 0.329 mol Fe2O3 with excess carbon produced 18.9 g Fe Fe2O3+3C⟶2Fe+3CO What is the actual ...

A: Given:0.329 mol Fe2O318.9 g FeThe chemical equation involved:Fe2O3+3C⟶2Fe+3CO


Q: The partial molar volumes of water and ethanol in a solution with xH2O=0.45 at 25 ∘C are 17.0 and 57...

A: In a mixture containing two miscible liquids, the partial molar volume refers to the contribution wh...


Q: For the reaction Na2CO3+Ca(NO3)2⟶CaCO3+2NaNO3   how many grams of calcium nitrate, Ca(NO3)2, are nee...

A: The number of moles of a compound is the ratio of mass and molar mass. The mathematical expression i...


Q: 2Al(s) + Fe2O3(s) = Al2O3(s) + 2Fe(s) What is the Delta H degrees for this reaction?

A: Given:2Al(s) + Fe2O3(s) = Al2O3(s) + 2Fe(s)


Q: How do I solve this?

A: Given information:


Q: Write a balanced equation for the combustion of C3H8(g) (propane) -i.e. its reaction with O2(g) form...

A: The balanced equation is:


Q: How much heat is required to convert solid ice with a mass of 960 g at a temperature of -10.0 °C to ...

A: Heat in kilojoules can be calculated using the specific heat capacity, temperature difference and th...


Q: Part A In terms of their attractive forces, explain why fats are solids but oils are liquids under n...

A: Fats and oils are known as one of the most abundant triglycerides as these are esters which are comp...


Q: LP gas burns according to the exothermic reaction: C3H8(g)+5 O2(g)→3 CO2(g)+4 H2O(g)ΔH∘rxn=−2044 kJ ...

A: Given:The balanced chemical equation:C3H8(g)+5 O2(g)→3 CO2(g)+4 H2O(g)ΔH∘rxn=−2044 kJVolume of water...