What Is the Mole Fraction of Ethanol in a Solution

question 7

Multiple Choice

What is the mole fraction of ethanol in a solution made by dissolving 29.2 g of ethanol,C₂H₅OH,in 53.6 g of water?

• A)0.176
• B)0.213
• C)0.352
• D)0.545

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Definitions:

Standard Price

The predetermined cost assigned to materials, labor, or overhead for the purposes of budgeting and variance analysis.

Material Price Variance

The difference between the actual cost of direct materials and the expected (standard) cost, indicating budgetary performance.

Direct Materials

Raw materials that can be directly attributed to the production of goods.

Variable Manufacturing Overhead

Costs that fluctuate with production volume, such as raw materials and direct labor.