A sample of Kr gas is observed to effuse through a porous barrier in 5.98 minutes. Under the same conditions, the same number of moles of an unknown gas requires 5.13 minutes to effuse through the same barrier. The molar mass of the unknown gas is_ g/mol

A sample of Kr gas is observed to effuse through a porous barrier in 5.98 minutes. Under the same conditions, the same number of moles of an unknown gas requires 5.13 minutes to effuse through the same barrier. The molar mass of the unknown gas is_ g/mol

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

A sample of Kr gas is observed to
effuse through a porous barrier
in 5.98 minutes. Under the same
conditions, the same number of
moles of an unknown gas
requires 5.13 minutes to effuse
through the same barrier. The
molar mass of the unknown gas
g/mol
is

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