Sand Is Converted to Pure Silicon in a Three Step $\rightarrow$

question 25

Multiple Choice

Sand is converted to pure silicon in a three step process. The third step is SiCl₄(g) + 2Mg(s) $\rightarrow$ 2MgCl₂(s) + Si(s) , $\Delta$ H = -625.6 kJ
What is the enthalpy change when 25.0 mol of silicon tetrachloride is converted to elemental silicon?

• A) -25.0 kJ
• B) -7820 kJ
• C) -1.56 * 10⁴ kJ
• D) -3.13 * 10⁴ kJ
• E) None of these choices is correct.

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Definitions:

Fascicle

A bundle of muscle or nerve fibers bound together by connective tissue.

Epineurium

The outermost layer of connective tissue surrounding a peripheral nerve, providing both protection and support.

Peripheral Nerve

Peripheral nerves are the nerves outside the brain and spinal cord, responsible for relaying information between the central nervous system and the rest of the body.

Fascicles

Bundles of muscle or nerve fibers ensheathed by connective tissue.