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If we have three different solutions, A, B, and C, each containing 100 g of water,...

If we have three different solutions, A, B, and C, each containing 100 g of water, plus respectively 6.84g of sucrose (C12H22O11), 0.92 g of ethanol, and 0.40 g of sodium hydroxide

Can you explain why A, B, and C will all have about the same freezing points

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