During the Night,humans Go Through About ____ Sleep Cycles,each Lasting

question 147

Multiple Choice

During the night,humans go through about ____ sleep cycles,each lasting about ____.

• A) 7;one hour
• B) 2 or 3;two hours
• C) 90;4 or 5 minutes
• D) 4 or 5;90 minutes

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Definitions:

Oxygens

are chemical elements with the symbol O and atomic number 8, essential for respiration and combustion processes, often found in molecular forms.

Formal Charge

A theoretical charge assigned to an atom in a molecule, calculated based on the assumption of equally shared electrons in bonds.

Non-Bonding Electrons

Non-bonding electrons, also known as lone pairs, are valence electrons on an atom that are not involved in chemical bonding and significantly influence molecular shape and polarity.

Formal Charge

Formal charge is a concept in chemistry that represents the charge assigned to an atom in a molecule, assuming that electrons in chemical bonds are shared equally between atoms.