How Many Atoms of Magnesium Are Present in the Reactants

question 45

Multiple Choice

How many atoms of magnesium are present in the reactants of this chemical equation? Mg(OH) ₂ + 2 HCl → MgCl₂ + 2 H₂O

• A) 0
• B) 1
• C) 2
• D) 3
• E) 4

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Definitions:

Thyroid

A gland in the neck that produces hormones regulating growth and metabolism.

Thalamus

A part of the brain located just above the brain stem that plays a critical role in relaying sensory information and acting as a center for pain perception.

Pituitary Gland

A pea-sized gland located at the base of the brain, involved in controlling growth, metabolism, and reproductive functions.

Gonads

Gonads are the primary reproductive organs in animals, including testes in males and ovaries in females, responsible for producing gametes and sex hormones.