What Is the Value of the Equilibrium Constant at 425

question 143

Multiple Choice

What is the value of the equilibrium constant at 425 K for a chemical equilibrium that has a H  value of 150 kJ/mol and a S  value of 86 J/mol  K?

• A)2.80
• B)1.14  10 ^{ 14}
• C)16.4
• D)6.11  10 ^{ 2}
• E)7.58

Analyze the role of marginal revenue and its relation to price in a purely competitive firm.

Distinguish between pure competition, monopoly, monopolistic competition, and oligopoly based on firm behaviors and market conditions.

Interpret the significance of entry barriers and their absence in pure competition.

Comprehend the relationship between demand curves, marginal revenue, and elasticity in purely competitive markets.

---

Definitions:

Duo-servo Brakes

A type of drum brake system where each shoe acts as a servo to the other, enhancing braking efficiency, commonly found in heavier vehicles.

Self-energizing

Refers to a mechanism in brake systems where the brake shoes are designed to use the motion of the vehicle to increase the force applied to the drum, enhancing braking efficiency.

Non-servo Type Brake

A brake system where the shoes do not use the rotation of the drum to self-apply, resulting in a simpler design often used in rear brakes.

Star Wheel Adjuster

A component in drum brakes used for adjusting the distance between the brake shoes and the drum, ensuring appropriate braking tension.