When Dissolved in Water, Which One or More of the Following

question 29

Multiple Choice

When dissolved in water, which one or more of the following compounds gives rise to a basic solution?

• A)calcium hydroxide, Ca(OH)₂
• B)washing soda, Na₂CO₃
• C)methanol, CH₃OH
• D)copper sulfate, CuSO₄
• E)Both A and B

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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.