Ima Chemist Found the Density of Freon-11 (CFCl₃) to Be

question 4

Multiple Choice

Ima Chemist found the density of Freon-11 (CFCl₃) to be 5.58 g/L under her experimental conditions. Her measurements showed that the density of an unknown gas was 4.38 g/L under the same conditions. What is the molar mass of the unknown?

• A)96.7 g/mol
• B)108 g/mol
• C)127 g/mol
• D)165 g/mol
• E)175 g/mol

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Definitions:

Direct Labor Cost Variance

The difference between the budgeted cost of direct labor for production and the actual cost incurred, indicating over or under allocation of resources.

Direct Labor Rate Variance

The difference between the actual cost of direct labor and the expected (or standard) cost, indicating discrepancies in workforce expenses.

Direct Labor Efficiency Variance

A measure of the difference between the actual hours worked and the standard hours expected for the production accomplished.

Favorable

A term used in budgeting and accounting to describe a financial result or variance that is better than expected or budgeted.