calculate molecular mass of KOH and percent composition by mass of Oxygen present in KOH.
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Answer:
Molecular mass of KOH
= atomic mass of K × 1 + atomic mass of O × 1 + atomic mass of H × 1
= 39 ×1 + 16 ×1 + 1 × 1
= 39 + 16 + 1
= 56
Explanation:
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