Molecular Speeds: the Root-Mean-Square Speed (Thermal Speed) for a Certain

question 1

Multiple Choice

Molecular speeds: The root-mean-square speed (thermal speed) for a certain gas at 100°C is 0.500 km/s. If the temperature of the gas is now increased to 200°C, the root-mean-square (thermal) speed will be closest to

• A) 563 m/s.
• B) 634 m/s.
• C) 707 m/s.
• D) 804 m/s.
• E) 1000 m/s.

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Definitions:

Normal Goods

Goods for which demand increases as the income of consumers increases, and falls when consumer income decreases.

Utils

A hypothetical unit of measurement used in economics to represent the satisfaction or utility that a consumer receives from consuming goods and services.

Substitution Effect

The change in consumption patterns due to a change in relative prices, where consumers replace more expensive items with less costly alternatives.

Inferior Good

Items for which demand falls when the income levels of buyers go up, unlike standard goods that see an increase in demand with rising incomes.