Molar Heat Capacities: an Ideal Monatomic Gas Cools from 455

question 19

Multiple Choice

Molar heat capacities: An ideal monatomic gas cools from 455.0 K to 405.0 K at constant volume as 831 J of energy is removed from it. How many moles of gas are in the sample? The ideal gas constant is R = 8.314 J/mol ∙ K.

• A) 2.50 mol
• B) 2.15 mol
• C) 1.50 mol
• D) 1.33 mol
• E) 0.725 mol

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Definitions:

Transporting Oxygen

The primary function of the respiratory and circulatory systems, allowing oxygen to be inhaled into the lungs, carried by red blood cells, and delivered to tissue.

Tissue Cells

The basic structural and functional units of tissues in living organisms, varying widely in structure and function based on their location and task.

Coagulation

The process of blood changing from a liquid to a gel, forming a blood clot, which is an essential part of hemostasis to stop bleeding.

Agglutination

The clumping together of particles, typically cells or proteins, often caused by an antigen-antibody reaction.