How Many Distinct Signals Would Appear in the (Proton-Decoupled) ¹³C

question 3

Multiple Choice

How many distinct signals would appear in the (proton-decoupled) ¹³C NMR spectrum of 2,4-dimethylpentane?

• A) 2
• B) 3
• C) 4
• D) 5

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Definitions:

Contribution Margin

The difference between the sales revenue of a product and its variable costs, used to cover fixed costs and profit.

Break-Even Point

The level of production or sales at which total revenues equal total costs, resulting in neither profit nor loss.

Sales Mix

The combination of products that a company sells, which can affect profitability due to different margins on each product.

Fixed Expenses

Costs that do not change with the level of production or sales over a certain period, such as rent or salaries.