A chemist weighed out 5.14 gm of a mixture containing unknown amounts of BaO (s) and CaO(s) and placed the sample in a 1.50 liter flask containing CO2(g) at 30.0°C and 750 torr. After the reaction to form BaCO3(s) and CaCO3(s) was completed, the pressure of CO2(g) remaining was 230 torr. Calculate the mass percentages of CaO(s) and BaO(s) in the sample.

A chemist weighed out 5.14 gm of a mixture containing unknown amounts of BaO (s) and CaO(s) and placed the sample in a 1.50 liter flask containing CO2(g) at 30.0°C and 750 torr. After the reaction to form BaCO3(s) and CaCO3(s) was completed, the pressure of CO2(g) remaining was 230 torr. Calculate the mass percentages of CaO(s) and BaO(s) in the sample.

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 chemist weighed out 5.14 gm of a mixture containing unknown amounts of BaO (s) and CaO(s) and
placed the sample in a 1.50 liter flask containing CO2(g) at 30.0°C and 750 torr. After the reaction to form
BaCO3(s) and CACO3(s) was completed, the pressure of CO2(g) remaining was 230 torr. Calculate the mass
percentages of CaO(s) and BaO(s) in the sample.

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