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WAEC - Chemistry (2021 - No. 32)

What is the concentration of a solution which contains 0.28g of potassium hydroxide in 100 cm\(^{3}\) of solution [KOH = 56]
0.01 mol dm\(^{-3}\)
0.05 mol dm\(^{-3}\)
0.10 mol dm\(^{-3}\)
0.50 mol dm\(^{-3}\)

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