Question

pls give me answer of quetion.

Answer 1

Student ‘C’ has made the desired solution as 50% (mass by volume)
means 50 g of solute for every 100 mL of solution and not in 100 mL of solvent.
Mass by volume % = Mass of solute (in g)/Volume of solution (in mL) x 100
50/100 x 100 = 50% mass by volume
Student ‘A’ dissolved 50 g of NaOH in 100 mL of water (solvent).
Student ‘B’ dissolved 50 g of NaOH in 100 g of water (solvent).
Both A and B cannot make the desired solution.
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