Hydrochloric Acid Is Widely Used as a Laboratory Reagent in Refining

question 23

Multiple Choice

Hydrochloric acid is widely used as a laboratory reagent in refining ore for the production of tin and tantalum, and as a catalyst in organic reactions. Calculate the number of moles of HCl in 62.85 mL of 0.453 M hydrochloric acid.

• A)28.5 mol
• B)1.04 mol
• C)0.139 mol
• D)0.0285 mol
• E)0.00721 mol

---

Definitions:

Standard Cost Card

A document that lists the standard costs associated with producing a product, including materials, labor, and overhead rates.

Direct Labor Hour

Direct labor hour refers to the time spent by workers directly involved in the production of goods or services.

Overhead Applied

A portion of overhead costs assigned to a particular cost object based on a predetermined rate.

Direct Labor Efficiency Variance

The difference between the budgeted amount of direct labor required to produce an output and the actual direct labor used.