If the Price of a 8GB Memory Card Decreases from $25

question 38

Multiple Choice

If the price of a 8GB memory card decreases from $25 to $20, the percentage change is

• A)-20 percent.
• B)-33 percent.
• C)-50 percent.
• D)-60 percent.

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Definitions:

Formal Charge

The charge assigned to an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms.

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.