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Problem- A quantitative analysis for an analyte gives a mean concentration of 12.6 ppm. The standard deviation for the method is found to be 1.1 ppm, and that due to sampling is 2.1 ppm.
Part a. What is the overall variance for the analysis?
Part b. By how much does the overall variance change if sm is improved by 10% to 0.99 ppm?
Part c. By how much does the overall variance change if ss is improved by 10% to 1.9 ppm?
Provide your answer in scientific notation
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An unkown metal crytallizes in one of the three cubic lattices.The edge length of the unit cell is 408pm.Given that the atomic radius of the metal is 144pm and the density of the solid is 19.3g/cm-3, what is the atomic symbol of the metal? a=2R a=..
Problem- We wants to determine the vapor pressure (VP) of an ideal solution of A and B at 35 degrees C. In order to calculate this, which parameters aremost critical for this determination
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Which of the following ideal aqueous solutions would be predicted to have the highest vapor pressure. 2.00 m MgBr2
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the rate of a first order reaction is 4.6 x 10 to the -4 power at 638k. if the activation energy is 104 kjmol calculate
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