In the Balanced Equation, 2 Al + 6 HCl $\to$ 2 AlCl₃ + 3 H₂, the Sum of the Coefficients

question 10

Multiple Choice

In the balanced equation, 2 Al + 6 HCl $\to$ 2 AlCl₃ + 3 H₂, the sum of the coefficients of the reactants is

• A)5
• B)8
• C)13
• D)none of these

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Definitions:

Parameter

A numerical characteristic or feature of a population that is estimated using sample data.

Sample Variance

A measure of the dispersion or variability within a sample dataset, indicating how much the individual data points differ from the sample mean.

Population Variance

A measure of the dispersion of a set of data points in a population, calculated as the average of the squared distances of each data point from the population mean.

Unbiased Estimator

A statistical estimator that, when applied repeatedly to numerous samples, gives correct parameter values on average.