The Carbon in Your Body Was Formed in Nuclear Reactions

question 36

Multiple Choice

The carbon in your body was formed in nuclear reactions in long-dead stars.How much energy was released when three ⁴He nuclei combined to make ¹²C? The mass of ⁴He is ,the mass of ¹²C is ,and .

• A) 7.274 MeV
• B) 3716 MeV
• C) 8.424 MeV
• D) 2.106 MeV

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Low-margin Items

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Contribution Margin Ratio

A financial metric indicating the portion of sales revenue that is not consumed by variable costs and therefore contributes to covering fixed costs.

Unit Contribution Margin

The difference between the selling price per unit and the variable cost per unit.

Break-even Point

The level of production or sales volume at which total revenues equal total costs, resulting in no net profit or loss.