A Solution Is Prepared by Dissolving 14

question 50

Multiple Choice

A solution is prepared by dissolving 14.0 g of NH₃ in 250.0 g of water. The density of the resulting solution is 0.974 g/mL. The mole fraction of NH₃ in the solution is __________.

• A)0.0550
• B)0.0560
• C)0.940
• D)0.922
• E)16.8

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Definitions:

Sample Size

Sample size refers to the number of observations or individuals included in a statistical sample.

Null Hypothesis

A hypothesis that assumes no significant difference or relationship exists between certain variables; it's the default assumption to be tested against.

Research Hypothesis

A statement made by a researcher that predicts a relationship between two or more variables.

Null Hypothesis

A statement used in statistical testing indicating no association or effect between two or more variables.