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Earn 100

State the formula of volume by volume percentage of solution.
Important Questions on Matter: Elements, Compounds and Mixtures
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The teacher instructed three students ‘A’, ‘B’ and ‘C’ respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50g of NaOH in 100 mL of water, 'B' dissolved 50g of NaOH in 100 g of water while 'C dissolved 50g of NaOH in water to make 100 mL of solution. Which one of them has made the desired solution and why?

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