Which of the Following Is True of a Chemical Reaction

question 4

Multiple Choice

Which of the following is true of a chemical reaction?

• A) In a chemical reaction, the number of moles of product always equals the number of moles of reactants.
• B) In a chemical reaction, the mass of the products always equals the mass of the starting materials that have reacted.
• C) In a chemical reaction, the number of moles of product always equals the number of moles of reactants, and the mass of products always equals the mass of the starting materials that have reacted.
• D) In a chemical reaction, the number of moles of product does not always equal the number of moles of reactants, and the mass of products does not always equal the mass of the starting materials that have reacted.

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Definitions:

Age

A measurement of the length of time an individual has lived, typically expressed in years.

Predicate Complement

An element of the sentence that completes the predicate and describes or renames the subject.

Subject Complement

A word or phrase that follows a linking verb and describes or identifies the subject of a sentence.

Complements

Elements that complete or bring to perfection; in grammar, words or groups of words that complete the meaning of a predicate.