Which of the following is NOT true about constant weighing in the experiment? Constant weight is achieved when two consecutive measured weights agree within plus or minus 0.3 mg. It involves a cycle of heating, cooling, and weighing. A proportionality constant will be multiplied to the measured weight to account for loss of water. A desiccator is used to avoid moisture to be absorbed by the sample.

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
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Chapter5: Errors In Chemical Analyses
Section: Chapter Questions
Problem 5.12QAP
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  1. Which of the following is NOT true about constant weighing in the experiment?

     
    1. Constant weight is achieved when two consecutive measured weights agree within plus or minus 0.3 mg.

       
    2. It involves a cycle of heating, cooling, and weighing.

       
    3. A proportionality constant will be multiplied to the measured weight to account for loss of water.

       
    4. A desiccator is used to avoid moisture to be absorbed by the sample.

       
       
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