1. The molal freezing point depression constant for cyclohexane is -20.9 C/m and normally freezes at 4.59 degrees C. Calculate the freezing point of a solution of 100 g of cyclohexane with 0.78 g benzene. 2. How much sodium hydroxide should be added to 250.0 mL of solution to make a 0.10 M solution?
3. How much salt (NaCl) must be added to 500 mL of water to cause the boiling point to be raised by 1.0 degree Celsius?

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Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.