chemical reactions
Balancing a chemical equation
prodt
two of t
CTIONS AN
ER OUTLINE
5. Solve the following questions : (4 marks each)
(1) Prove that the sum of the squares of the
diagonals of parallelogram is equal to the sum
of the squares of its sides.
igure :
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A reaction which has an equal number of atoms of all the elements on both sides of the chemical equation is called a balanced chemical equation. The law of conservation of mass states that mass can neither be created nor destroyed. Hence, in a chemical reaction, the total mass of reactants should be equal to the total mass of the products. It means that the total number of atoms of each element should be equal on both sides of a chemical equation. Hence, it is for this reason that chemical equations should be balanced.
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