A Certain Automobile Tire Has a Volume of 0

question 143

Multiple Choice

A certain automobile tire has a volume of 0.0185 m³. If the absolute (or total) pressure in the tire is 500 kPa and the temperature is 298 K, how many molecules are there inside the tire? (R = 8.31 J/mol ∙ K, N_A = 6.022 x 10²³ molecules/mol)

• A) 2.25 × 10²³ molecules
• B) 2.25 × 10²⁴ molecules
• C) 3.25 × 10²³ molecules
• D) 3.25 × 10²⁴ molecules
• E) 3.25 × 10²⁵ molecules

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Definitions:

Kinetic Energy

The energy an object possesses due to its motion, which is dependent on the mass and the square of its velocity.

Pressure Differential Valve

A valve used in hydraulic systems to maintain a consistent pressure difference between two points, crucial in braking systems for safety.

Metering Valve

A valve in brake systems that controls the flow of brake fluid, ensuring proper balance and timing in brake application.

Proportioning Valve

A valve in a vehicle's braking system that regulates the pressure between the front and rear brakes, ensuring balanced braking.