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Balance by conservation of mass

Exercise and reference answers

Left
  1. Coefficient
    2
    Formula
    H2
  2. Coefficient
    1
    Formula
    O2
Right
  1. Coefficient
    2
    Formula
    H2O
Instructions
Set each coefficient until both sides carry the same atoms.

Explanation

_Source: syllabus Chemistry Part I, Unit 1 'Some Basic Concepts of Chemistry'_
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