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The pH of a liquid is 8.2 + 0.1. Find [H1] and its absolute and relative uncertainty.
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- What are the advantages and disadvantages of using external standards in instrumental analysis?Briefly explain (1-2 sentences) the differences between obtained results (Optical vs Mass Spectral) for the two techniques. (ICP-AES Vs ICP-MS)A chemical synthesis was carried out four times, resulting in yields of 51.2%,51.2%, 57.4%,57.4%, 48.1%,48.1%, and 44.6%.44.6%. Calculate the range, mean, and average deviation of these values.
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- What is the purpose of a calibration curve in analytical chemistry?A method for the detection of morphine is used to generate a calibration curve in which the assay response (y) is plotted versus morphine concentration (x, in mg/L). This gives a straight line with a slope (m) of 0.241 and a y-intercept (b) of 0.011, where y = mx + b. The slope of this line has a standard deviation of ±0.007, and the standard deviation of the intercept is ±0.006. If the sample from an athlete gives a response of 0.506 ± 0.013 in this method, what is the concentration of morphine in the sample and estimated precision of this concentration?What is the relationship between chemical shift in ppm and operating frequency?