AP Chemistryeasymcq1 pt
What do the coefficients in a balanced chemical equation represent?
A.Mole ratios between substances
B.Mass ratios in grams
C.Volume ratios for all substances
D.The reaction rate
Explanation
Core Concept
Coefficients count formula units, so they give the relative numbers of moles reacting and forming. They are never mass ratios — masses require molar-mass conversion.
Correct Answer
AMole ratios between substances
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