A 09182 G Sample of CaBr₂ Is Dissolved in Enough Water

question 71

Multiple Choice

A 0.9182 g sample of CaBr₂ is dissolved in enough water to give 500. mL of solution. What is the calcium ion concentration in this solution

• A) 9.19 * 10^-3 M
• B) 2.30 * 10^-3 M
• C) 2.72 * 10^-3 M
• D) 4.59 * 10^-3 M
• E) 1.25 * 10^-3 M

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Definitions:

Interval Estimate

An estimate of a population parameter given as a range (interval) of values, defined by upper and lower bounds.

Sample Size

The number of observations or datapoints collected in a sample, which is a subset of the population being studied.

Population Mean

The average or central value of all the numbers in a population.

Standard Deviation

A statistic that quantifies the dispersion or variability of a distribution, calculated as the square root of the variance.