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JAMB Chemistry 1993 Question 4

Question 4

Chemical Formulae and Equations

A balanced chemical equation obeys the law of

  1. A.conservation of mass
  2. B.definite proportions
  3. C.multiple proportions
  4. D.conservation of energy
Show the answer and explanation

Answer: A (conservation of mass)

Explanation

Balancing makes the number of each kind of atom the same on both sides, so the total mass of reactants equals the total mass of products.