When 1266g of Calcium Is Heated in Air,17

question 15

Multiple Choice

When 12.66g of calcium is heated in air,17.73g of calcium oxide is formed.The percent by mass of calcium in calcium oxide is

• A)28.60%
• B)40.40%
• C)71.40%
• D)1.400%

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Definitions:

Nervous System

The complex network of nerve cells and fibers that transmits nerve impulses between parts of the body, coordinating its activities.

Barbiturate

A class of drugs acting as central nervous system depressants, used as sedatives, hypnotics, and anticonvulsants.

Disinhibitor

An agent or factor that reduces inhibition, often resulting in impulsive or more free behavior.

Barbiturates

A class of drugs that act as central nervous system depressants, historically used for anxiety, insomnia, and seizure disorders.