Suppose the O, gas evolved by a certain chemical reaction taking place at 50.0 Cis collected over water, using an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 118. ml.

Suppose the O, gas evolved by a certain chemical reaction taking place at 50.0 Cis collected over water, using an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 118. ml.

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter8: Gases

Section: Chapter Questions

Problem 100E: The oxides of Group 2A metals (symbolized by M here) react with carbon dioxide according to the...

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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

Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it
easy to isolate and measure the amount of gas produced.
collected
chenical
Suppose the O, gas evolved by a certain chemical reaction taking place at 50.0 C is collected over water, using
an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to
be 118. ml.
water
Tetice
Sketch of a gas-collection apparatus
Caiculate the mass of O, that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about
the reaction conditions and the nature of the gases.

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