What mass of a solid sample containing 2.5% analyte particles and 97.5% solvent particles must be taken to give a standard deviation of 2% of the number of analyte particles,if the average particle volume is 2.54 nL and the sample has an average density of 1.548 g/mL?
Correct Answer:
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Q2: Sample preparation of a laboratory sample can
Q3: A mixture contains 2.5% KBr and 97.5%
Q4: For random errors,the overall variance, 
Q5: _ dissolves substances that will not dissolve
Q6: Sample storage is an important aspect of
Q7: _uses a small volume of chromatographic stationary
Q8: Which samplng term is incorrectly defined?
A)laboratory sample
Q9: All of the following are used to
Q10: What mass will give a sampling standard
Q11: To calculate the number of required replicates
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