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Your science master has purchased a Hydrogen peroxide bottle from a chemical shop. It was labeled as 10-volume what do you understand by that
The volume strength of hydrogen peroxide is the volume of oxygen at STP released by one volume of the solution on decomposition, $$2\text{H}_2\text{O}_2 \rightarrow 2\text{H}_2\text{O} + \text{O}_2$$. So 10-volume means 1 mL of the solution gives 10 mL of $$\text{O}_2$$ at STP.
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