A Solution Is Prepared by Dissolving 7

question 42

Multiple Choice

A solution is prepared by dissolving 7.00 g of glycerin (C₃H₈O₃) in 201 g of ethanol (C₂H₅OH) . The freezing point of the solution is __________°C. The freezing point of pure ethanol is -114.6°C at 1 atm. The molal-freezing-point-depression constant (K_f) for ethanol is 1.99°C/m. The molar masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol, respectively.

• A)-121.3
• B)0.752
• C)-107.9
• D)-113.8
• E)-115.4

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Definitions:

Effective Interest

The real cost of borrowing or the actual interest rate earned, considering compounding and fees.

Amortize Discount

The gradual reduction of a bond discount over the life of the bond, expensed as interest over the period.

Straight-Line Method

The Straight-Line Method is a way of calculating depreciation of an asset, where the asset's cost is evenly spread over its useful life.

Other Than Temporary

Classification of impairments or losses indicating that the reduction in value is not expected to reverse in the near future.