For Which of the Equations Shown Below Does the Standard

question 42

Multiple Choice

For which of the equations shown below does the standard enthalpy of reaction equal the standard molar enthalpy of reaction of the product?
I. 1 / 2 N₂(g) + 3 / 2 H₂ (g) NH₃(g)
II. H₂ (g) + Br₂( ) 2 HBr (g)
III. HCl (g) + NH₃(g) NH ₄Cl (s)

• A) I only
• B) II only
• C) III only
• D) I and II
• E) I and III

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Definitions:

Endocrine System

A network of glands and organs that produce, store, and secrete hormones into the bloodstream to regulate the body’s growth, metabolism, and function.

Neuromodulators

Chemicals released by nerve cells to signal, modify, and regulate the activity of other neurons.

Synaptic Transmission

The process by which one neuron communicates with another by passing chemical or electrical signals across a synapse.

Neurotransmitter Receptor

A protein molecule on a neuron's surface that reacts to a specific neurotransmitter, influencing neural communication.