A Gas Mixture Consists of Equal Masses of Methane (Molecular

question 20

Multiple Choice

A gas mixture consists of equal masses of methane (molecular weight 16.0) and argon (atomic weight 40.0) . If the partial pressure of argon is 200. torr, what is the pressure of methane, in torr?

• A)80.0 torr
• B)200. torr
• C)256 torr
• D)500. torr
• E)556 torr

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Definitions:

Positive Values

Numbers greater than zero.

Degree of Freedom

The number of independent ways by which a dynamic system can move without violating any constraint applied on it, often used in statistics to determine the number of values in the final calculation of a statistic that are free to vary.

Chi-square Distribution

Chi-square distribution is a distribution of the sum of squared independent random variables, used primarily in hypothesis testing for categorical data.

Chi-square Distribution

A probability distribution used in statistical analysis that is applicable when dealing with categorical data and assessing how likely observations are due to chance.