After heating a 1.095 gram sample of potassium chlorate, KCIO3, the final mass of the residue was 0.682 grams. What is the percent by mass of the oxygen in the sample? 37.7 % oxygen O 62.3 % oxygen O 0.623 % oxygen O 1.65 % oxygen O 0.377 % oxygen

After heating a 1.095 gram sample of potassium chlorate, KCIO3, the final mass of the residue was 0.682 grams. What is the percent by mass of the oxygen in the sample? 37.7 % oxygen O 62.3 % oxygen O 0.623 % oxygen O 1.65 % oxygen O 0.377 % oxygen

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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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

After heating a 1.095 gram sample of potassium
chlorate, KCIO3, the final mass of the residue
was 0.682 grams. What is the percent by mass of
the oxygen in the sample?
O 37.7 % oxygen
62.3 % oxygen
O 0.623 % oxygen
O 1.65 % oxygen
O 0.377 % oxygen

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