Question

The molal boiling point constant (Kb) for water is ).51oC/m and the molal freezing point constant (Kf) for water is 1.86oC/m. Given this information here is the question...
If I pour 25 mL of 0.035 M NaOH into 975 mL of water, what is the new concentration of NaOH?
You are analyzing a solid isolated from a reaction and find that its boiling point is over 1000 ∘C\rm ^{\circ}C. You dissolve the compound in water solution and recrystallize it to produce some solid crystals that you use to determine that the compound is a crystalline solid. Which of the following could be the identity of the unknown solid?

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