Consider the Following Thermochemical Equation

question 100

Multiple Choice

Consider the following thermochemical equation:
N₂(g) + 2O₂(g) → 2NO₂(g) ; ΔH° = 66.2 kJ
From this equation,we may conclude that 66.2 kJ is the quantity of heat that is

• A)gained from the surroundings when 1 mol of NO₂ is formed at constant pressure.
• B)lost to the surroundings when 1 mol of NO₂ is formed at constant pressure.
• C)gained from the surroundings when 2 mol of NO₂ is formed at constant pressure.
• D)lost to the surroundings when 2 mol of NO₂ is formed at constant pressure.
• E)lost to the surroundings when 1 mol of O₂ is consumed at constant pressure.

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Definitions:

Veins

Veins are blood vessels that carry blood toward the heart, typically carrying deoxygenated blood, except for the pulmonary and umbilical veins.

Endothelium

The thin layer of cells lining the interior surface of blood vessels and lymphatic vessels, playing a key role in vascular function.

Valves

Structures in the heart and veins that maintain blood flow in one direction, preventing backflow.

Systemic Circulation

The part of the cardiovascular system that carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.