Substance X Has a Heat of Vaporization of 55

question 134

Multiple Choice

Substance X has a heat of vaporization of 55.4 kJ/mol at its normal boiling point (423°C) . For the process X(l) → X(g) at 1 atm and 423°C, calculate the value of:
-ΔS_surr

• A) -79.6 J/K•mol
• B) 0
• C) -103 J/K•mol
• D) 103 J/K•mol
• E) 79.6 J/K•mol

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Definitions:

Slack Adjuster

A component in a vehicle's braking system that automatically adjusts the brakes as they wear down to maintain proper brake performance.

Brake Chamber Pushrod

A brake chamber pushrod is a component of a pneumatic brake system, translating the force from the brake chamber to the brake mechanism to slow or stop the vehicle.

Compressor Compression Rings

Rings fitted around a compressor's piston to seal the combustion chamber against air leaks and maintain compression efficiency.

Inlet Restriction

A limitation or obstruction in the pathway through which fluids or air enters a system, affecting the system's performance.