An IR Spectrum of an Unknown Organic Molecule Having the Molecular

question 12

Multiple Choice

An IR spectrum of an unknown organic molecule having the molecular formula of C₄H₈O shows no absorptions at 1630-1780 cm^-1 or at 3200-3500 cm^-1.To what class of compounds does the unknown belong?

• A) alcohol
• B) carboxylic acid
• C) ketone
• D) ether
• E) aldehyde

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Definitions:

Machine-hours

A measure of the operating time of machines or equipment, typically used as a basis for allocating manufacturing overhead in product costing.

Supplies Costs

Supplies costs are expenses related to the consumable items used in the operation of a business, not directly part of the finished product.

Spending Variance

involves the comparison of actual spending to what was budgeted, highlighting differences that management needs to address.

Static Planning Budget

A budget based on a fixed level of activity, created at the start of a budgeting period, which does not change with actual levels of activity.