A coefficient is a constant by which a variable is multiplied. In chemistry, a coefficient is the number in front of a formula. (The 2 in 2CH4 is the coefficient.) The coefficients in a chemical equation represent the proportion of A) products to reactants. B) the amount of atoms in a solid phase to the amount in a liquid phase. C) mass to volume. D) molecules or atoms relative to other molecules or atoms.

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Explanation:

The coefficients in a chemical reaction are called stochiometric coefficients

they represent the number of atoms or molecules they are multiplied to.

A chemical reaction has generally this form:

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under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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