Find the Mass of AlCl₃ That Is Produced When 25

question 59

Multiple Choice

Find the mass of AlCl₃ that is produced when 25.0 grams of Al₂O₃ react with excess HCl according to the following equation.
Al₂O₃(s) + 6HCl(aq) → 2AlCl₃(aq) + 3H₂O(l)

• A)155 g
• B)72.9 g
• C)65.4 g
• D)32.6 g
• E)16.3 g

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Definitions:

Labor Efficiency Variance

The difference between the actual labor hours used and the standard labor hours expected for the level of production achieved, indicating labor productivity.

Labor Rate Variance

The difference between the actual cost of labor and the budgeted or standard cost, indicating efficiency or inefficiency in workforce use.

November

The eleventh month of the year in the Gregorian calendar, characterized by the transition from fall to winter in many regions.

Standard Cost

A predetermined cost of manufacturing, used for budgeting and assessing performance.