What is the measured amount of a product obtained from a chemical reaction?

The measured amount of a product obtained from a chemical reaction is the Actual Yield

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in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

answer: they produce more slow than unicellular organisms.