Find the absorbance that gives a negative concentration
Assume that you carry out an analytical procedure to generate a calibration curve. Then you analyze an unknown and find the absorbance that gives a negative concentration for the analyte. What does this mean?
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What is the concentration of H2S in mg/L when the hydrogen sulfide, which is extremely toxic to humans, can be detected at a concentration of 2.00 ppb and which is having the density of air is1.2929 g/L.
The main office of the franchise restaurant chain desires to be capable to predict what sales may be at proposed new locations for restaurants, based on what they've learned from their several hundred existing restaurants. What statistical approac
When we take the diameter of a proton to be 1.0* 10^ -15 m, then what would be the mass of the mini black hole?
Calculate the kinetic energy of an electron (in J) that is ejected from the sodium by light with a wavelength of 340 nm? Electrons are ejected from the sodium metal by any light that has a wavelength shorter than 544 nm.
Determine expected holding period return over next year? How much of this return is due to capital gains (price appreciation) and how much is attributable to dividend yield?
The take-up reel of a cassette tape consists of an average radius of 1.4 cm. Determine the length of tape (in meters) which passes around the reel in 56 s if the reel rotates at an average angular speed of around 3.4 rad/s.
The director of security for an industrial site is thinking of closing one or more of the site's several gates to make it easier to control who gets in.
Explain what will be the result if a student extracts first with NaOH then with NaHCO3. Explain why are the acidification steps necessary after the two extractions?
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