A Sample of an Ideal Gas Is Compressed by a Piston

question 38

Multiple Choice

A sample of an ideal gas is compressed by a piston from 10 m³ to 5 m³ and simultaneously cooled from 273°C to 0°C.As a result there is:

• A)an increase in pressure
• B)a decrease in pressure
• C)a decrease in density
• D)no change in volume
• E)an increase in density

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Definitions:

Confidence Interval

A range of values, derived from the sample data, that is believed, with a certain probability, to contain the true population parameter.

Population Mean

The average of all the individuals or items in a population, calculated as the sum divided by the total number in the population.

Degrees Of Freedom

The number of independent values or quantities which can vary in the analysis without violating any constraints.

Margin Of Error

An expression of the amount of random sampling error in a survey's results, which describes a confidence interval’s radius around a survey’s result within which the true population parameter lies.