A mixture contains 2.5% KBr and 97.5% inert particles.What is the relative standard deviation for KBr is 50 000 particles are taken?
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Q1: What mass of a solid sample containing
Q2: Sample preparation of a laboratory sample can
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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