Evaluate the Expression Without Using a Calculator

question 5

Multiple Choice

Evaluate the expression without using a calculator.
-The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH = -log x where x represents the concentration of the hydrogen ions in the
Solution in moles per liter. Find the pH if the hydrogen ion concentration is 5 × 10-12.

• A) 11.7
• B) 11.3
• C) 12.7
• D) 12.3

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Definitions:

Assertiveness

A communication style characterized by confidently expressing one’s thoughts, feelings, and needs directly and respectfully.

Prejudice

A preconceived opinion or judgment about someone or something that is not based on reason or actual experience, often manifesting as bias or discrimination.

Communication Differences

Variations in the ways individuals express, receive, and interpret messages, affected by cultural, personal, and situational factors.

Long-Term Orientation

A cultural dimension that values future rewards over immediate gratification, emphasizing perseverance and savings for the future.