5%(m/v) is the percent of a solution containing 45 g of lithium hydroxide, LiOH, dissolved in enough water to make a 250 ml solution
%(m/v)=Mass of solute (grams)/Volume of solution (mL)×100
For the given solution,
Mass of solute = 1.25 g
Volume of solution = 25.00 mL%(m/v)=1.25 g25.00 mL×100=5% (m/v)
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