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Health, 21.08.2020 03:01 fredo99

The reason for wafting or fanning a small amount of chemical vapors toward the nose as a means to detect odors in a test tube is to: a. avoid experimental error from excessive loss of mass of reactants or products
b. avoid splashing chemicals into the face of any person
c. protect the respiratory tract against potentially harmful vapors
d. determine the relative strength of the odor before smelling directly

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