Rubidium Possesses Two Stable Forms and Has an Average Mass

question 93

Multiple Choice

Rubidium possesses two stable forms and has an average mass of 85.5. 85Rb has a mass of 84.9 and a percent abundance of 72.2%. What is the mass of the other form of Rb?

• A) 86.1 u
• B) 85.7 u
• C) 88.3 u
• D) 87.1 u
• E) 89.4 u

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Definitions:

Normal Good

A good for which demand increases as consumer income rises, and falls when consumer income decreases.

Income Rises

An increase in the amount of money earned by individuals or households, which can impact their purchasing power and consumption habits.

Marginal Rate

The marginal rate refers to the rate at which one quantity changes with a slight increase in another quantity, often used in economics to discuss changes in tax, cost, or benefit.

Indifference Curve

A graph showing different combinations of two goods among which a consumer is indifferent, reflecting preferences for consumption.