The Following Question Refers to the Following System: a 1 $\times$

question 70

Multiple Choice

The following question refers to the following system: A 1.0-liter solution contains 0.25 M HF and 0.83 M NaF (K_a for HF is 7.2 $\times$ 10^-4) . What is the pH of this solution?

• A)3.14
• B)3.66
• C)2.62
• D)0.52
• E)10.34

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Definitions:

Ecological Approach

An approach to the study of cognition emphasizing the natural contexts or settings in which cognitive activities occur and the influences such settings have on the ways cognitive activities are acquired, practiced, and executed.

Anthropology

The study of humans, human behavior, and societies in the past and present, focusing on cultural, social, and physical aspects.

Cultural Contexts

The environment and factors that define the beliefs, practices, norms, and social influences of a particular group of people.

Quasi-experiment

A type of experimental design that does not include random assignment of participants to conditions, often used in situations where controlled experiments are not feasible.