The Lab Technician Anna Lytic Adds 2

question 23

Multiple Choice

The lab technician Anna Lytic adds 2.20 mol KOH to 1.00 L of 0.5 M Al(NO₃) ₃. What is the concentration of aluminum ions after the aluminum nitrate has reacted with the potassium hydroxide? K_f = 3.0 × 10³³ for Al(OH) ₄^-

• A) 1.8 × 10^-7 M
• B) 9.1 × 10^-18 M
• C) 1.0 × 10^-31 M
• D) 3.3 × 10^-34 M
• E) 7.1 × 10^-36 M

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Definitions:

Effect Size

An objective, standardized way of describing the strength of the independent variable’s influence on the dependent variable.

P Value

A statistical measure that helps scientists determine the significance of their research results.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the values differ from the mean.

Descriptive Statistics

Statistical procedures that organize and summarize research data.