The Root-Mean-Square Speed (Thermal Speed)of the Molecules of a Gas

question 11

Multiple Choice

The root-mean-square speed (thermal speed) of the molecules of a gas is 200 m/s at a temperature 23.0°C.What is the mass of the individual molecules? The Boltzmann constant is 1.38 × 10^-23 J/K.

• A)2.13 × 10^-25 kg
• B)2.45 × 10^-25 kg
• C)5.66 × 10^-25 kg
• D)1.78 × 10^-25 kg
• E)3.11 × 10^-25 kg

---

Definitions:

Mental Health

Refers to the cognitive, behavioral, and emotional wellbeing of an individual; it is about how people think, feel, and behave.

Lab Testing

The process of performing various tests in a controlled environment, usually a laboratory, to analyze substances, diagnose conditions, or conduct research.

DTaP

A vaccine that protects against diphtheria, tetanus, and pertussis (whooping cough), recommended for children for immunity against these infectious diseases.

MMR

A combined vaccine used to prevent measles, mumps, and rubella, diseases caused by viruses.