Determine the PH of a 0

question 60

Multiple Choice

Determine the pH of a 0.62 M NH₄NO₃ solution at 25°C.The K_b for NH₃ is 1.76 × 10^-5.

• A) 2.48
• B) 9.27
• C) 11.52
• D) 4.73
• E) 9.45

Recognize the role of demographic trends in shaping business opportunities for small enterprises.

Understand the impact of technological advances on small business operations and strategies.

Comprehend strategies for business downsizing and its effects on company structure and operations.

Identify resources available for small business advice and development.

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Definitions:

Population Variance

The variance of a population data set, calculating the mean of the squared deviations from the mean of the data.

Confidence Interval

A range of values, derived from the sample data, that is likely to contain the value of an unknown population parameter.

Sample Variance

A measure of variability that quantifies the spread of a sample data set; calculated as the sum of squared deviations from the sample mean, divided by the sample size minus one.

Population Variance

A measure of the dispersion or spread of a population dataset, calculated as the average of the squared differences from the population mean.