The Average Molar Mass of Lithium Is 6

question 54

Multiple Choice

The average molar mass of lithium is 6.941.A sample of lithium consists of two isotopes with masses of 6.01512 amu and 7.01600 amu.Determine the percent abundance of each isotope.

• A) 7.49% Li-6 and 92.51% Li-7
• B) 8.45% Li-6 and 91.55% Li-7
• C) 12.49% Li-6 and 87.51% Li-7
• D) 91.55% Li-6 and 8.45% Li-7
• E) 92.51% Li-6 and 7.49% Li-7

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Definitions:

Average Variable Cost

Variable cost divided by the quantity of output

Unique Goods

Products that are distinct in their characteristics, offering uniqueness that differentiates them from mass-produced items.

Price Discrimination

A strategy in pricing where the same provider sells identical or nearly identical products or services at varying prices across different markets.

Deadweight Loss

The reduction in total societal welfare resulting from market inefficiencies, typically due to taxes, subsidies, or monopolies.