The Chemical Acidity of a Solution Is Measured in Units $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right]$

question 5

Multiple Choice

The chemical acidity of a solution is measured in units of pH: $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right]$ ,where $\left[ \mathrm { H } ^ { + } \right]$ is the hydrogen ion concentration in the solution.What is $\left[ \mathrm { H } ^ { + } \right]$ if the $\mathrm { pH } = 3.8$ ?

• A)3.800
• B) \(6.31 \times 10 ^ { - 4 }\)
• C) \(6.31 \times 10 ^ { - 3 }\)
• D) \(1.58 \times 10 ^ { - 3 }\)
• E) \(1.58 \times 10 ^ { - 4 }\)

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Definitions:

Static Stretching

A form of stretching exercises where muscles are extended and held in position for a period of time to increase flexibility and range of motion.

Ballistic Stretching

A form of dynamic stretching involving quick, bouncing movements to push muscles beyond their normal range of motion.

Range of Motion

The entire scope of movement a joint can achieve, often measured by its flexion and extension limits.

Slight Tension

A minimal amount of stress or pressure applied to a muscle or group of muscles, often during stretching or exercise.