Steps in Balancing Equations: Write the unbalanced chemical equation. Make sure you have followed correctly the rules in writing formulas of compounds. 1. Take note of the elements present in the reactant and product side. 2. Count the number of atom/s of each element present in the reactant and product side. 3. Apply the Law of Conservation of Mass to get the same number of atoms of every element on each side of the equation. Balance chemical equations by placing appropriate coefficients before the symbol or formula. Do not change the subscripts of the formula in an attempt to balance the equation as it will change the identity of the components. Activity 2. Balancing Act 1. Balance the chemical equations guided by the steps in balancing equations below this table. 2. Apply the concept of Law of Conservation of Mass in balancing chemical equations. Reaction Balanced Chemical Equation 1.Mg + N2 Mg N2 2.Cl2ig) +KBr(ag) → KCl(ag) + Brz0 3.C2H6 + O2 CO2 + H20 4. Fe + H2SO, → Fe2(SO4)3 + H2 5. O2 + CS2 - CO2 + SO2

Steps in Balancing Equations: Write the unbalanced chemical equation. Make sure you have followed correctly the rules in writing formulas of compounds. 1. Take note of the elements present in the reactant and product side. 2. Count the number of atom/s of each element present in the reactant and product side. 3. Apply the Law of Conservation of Mass to get the same number of atoms of every element on each side of the equation. Balance chemical equations by placing appropriate coefficients before the symbol or formula. Do not change the subscripts of the formula in an attempt to balance the equation as it will change the identity of the components. Activity 2. Balancing Act 1. Balance the chemical equations guided by the steps in balancing equations below this table. 2. Apply the concept of Law of Conservation of Mass in balancing chemical equations. Reaction Balanced Chemical Equation 1.Mg + N2 Mg N2 2.Cl2ig) +KBr(ag) → KCl(ag) + Brz0 3.C2H6 + O2 CO2 + H20 4. Fe + H2SO, → Fe2(SO4)3 + H2 5. O2 + CS2 - CO2 + SO2

Introductory Chemistry: A Foundation

8th Edition

ISBN:9781285199030

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 44QAP: According to the law of conservation of mass, mass cannot be gained or destroyed in a chemical...

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