A Room Has a Volume of 50 M³ and Is

question 29

Multiple Choice

A room has a volume of 50 m³ and is filled with air of an average molecular mass of 29 u.What is the mass of the air in the room at a pressure of 1.0 atm and temperature of 25°C? R = 0.082 L⋅atm/mol⋅K

• A) 177 kg
• B) 42 kg
• C) 59 kg
• D) 30 kg
• E) ​24 kg

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Definitions:

Ciliary Muscle

Within the ciliary body of the vertebrate eye, the ciliary muscle controls the shape of the lens.

Iris

Muscular ring that surrounds the pupil and regulates the passage of light through this opening.

Pupil

Opening in the center of the iris of the vertebrate eye.

Retina

The light-sensitive layer of tissue at the back of the inner eye, which converts light images into electrical signals sent to the brain.