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Observe: To model how hydrogen and oxygen react to make water, type "H2+02" into the Reactants box and "H20" into the Products box. As the equation is written, which element is not in balance? Explain:

Observe: To model how hydrogen and oxygen react to make water, type "H2+02" into the Reactants box and "H20" into the Products box. As the equation is written, which element is not in balance? Explain:

World of Chemistry, 3rd edition
World of Chemistry, 3rd edition
3rd Edition
ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter9: Chemical Quantities
Section: Chapter Questions
Problem 1STP
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1. Observe: To model how hydrogen and oxygen react to make water, type "H2+02" into the Reactants box and "H20" into the Products box. As the equation is written, which element is not in balance? Explain: 2. Balance: To balance a chemical equation, you are not allowed to change the chemical formulas of the substances involved in the reaction. You are allowed to change the number of molecules of each substance by adding coefficients in front of the formulas. A. To balance the oxygen atoms, add a "2" in front of the "H20" in the Products box. How many oxygen atoms are found on each side of the equation now? B. To balance the hydrogen atoms, add a "2" in front of the "H2" in the Reactants box. How many drogen atoms are found on each side of the equation now? C. Is this equation currently balanced? Click Show if balanced to check. 3. Apply: Now enter a more complex chemical reaction: Ca(OH)2 + HBr CaBr2 + H₂O. List the numbers of each element in the tables below: Reactants Ca O H Br (Activity B continued on next page) Ca Reproduction for educational use only. Public sharing or posting is prohibited. Products O A. Which elements are out of balance? B. Add coefficients to balance first the bromine (Br) and then the hydrogen (H) atoms. When the equation is balanced, write the complete formula below: (DELL H Br ©2018 ExploreLearning All rights reserved äl
Transcribed Image Text:1. Observe: To model how hydrogen and oxygen react to make water, type "H2+02" into the Reactants box and "H20" into the Products box. As the equation is written, which element is not in balance? Explain: 2. Balance: To balance a chemical equation, you are not allowed to change the chemical formulas of the substances involved in the reaction. You are allowed to change the number of molecules of each substance by adding coefficients in front of the formulas. A. To balance the oxygen atoms, add a "2" in front of the "H20" in the Products box. How many oxygen atoms are found on each side of the equation now? B. To balance the hydrogen atoms, add a "2" in front of the "H2" in the Reactants box. How many drogen atoms are found on each side of the equation now? C. Is this equation currently balanced? Click Show if balanced to check. 3. Apply: Now enter a more complex chemical reaction: Ca(OH)2 + HBr CaBr2 + H₂O. List the numbers of each element in the tables below: Reactants Ca O H Br (Activity B continued on next page) Ca Reproduction for educational use only. Public sharing or posting is prohibited. Products O A. Which elements are out of balance? B. Add coefficients to balance first the bromine (Br) and then the hydrogen (H) atoms. When the equation is balanced, write the complete formula below: (DELL H Br ©2018 ExploreLearning All rights reserved äl
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