a) 1.488×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 81.2 s. Under identical conditions, 1.945×10-4 mol of argon gas takes 88.0 s to effuse. What is the molar mass of the unidentified substance (in g/mol)?
a) 1.488×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 81.2 s. Under identical conditions, 1.945×10-4 mol of argon gas takes 88.0 s to effuse. What is the molar mass of the unidentified substance (in g/mol)?
General Chemistry - Standalone book (MindTap Course List)
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ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter5: The Gaseous State
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Problem 5.34QP: Two identical He-filled balloons, each with a volume of 20 L, are allowed to rise into the...
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a) 1.488×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 81.2 s.
Under identical conditions, 1.945×10-4 mol of argon gas takes 88.0 s to effuse.
What is the molar mass of the unidentified substance (in g/mol)?
b)The percentage C by mass in the above unidentified substance is 82.7%. It may also contain H.
What is the molecular formula of the substance?
(In typing this formula use the convention that C comes first.)
c)Under identical conditions, how many moles of allene (C3H4) gas would effuse in 76.6 s?
I know how to do A and B, i just need help with C.
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