Q: What is the number placed in front of a chemical symbol or formula that shows how many atoms or molecules of the substance are involved in the reaction?


Read this paragraph and choose the correct option from the provided answers:

Coefficients are used to balance chemical equations. A coefficient is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction.

 Choices:

- requirement

- frequency

- note

- coefficient


A:
coefficient