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Shown below is a student's answer from last year's exam depicting a block diagram of a flame atomic absorption spectrometer for measuring calcium. The path that light travels is indicated by (→), and the path for voltage or current by (==). Modify the diagram to correct the errors by labeling each one, describe what is wrong, and suggest the proper configuration. You can add or subtract any extra components that are necessary. Be sure to account for background absorption of molecules that may be present in the flame.
The following reaction takes place in acidic conditions under rigorous heating. Complete the reaction mechanism adding missing atoms and using lone pairs, charges, and curved arrows as necessary. Ignore hydrogen sulfate in boxes 2 and 3.
Which of the following compounds does not give Lassaigne's test for the detection of Nitrogen ? (A) Glycene (B) Urea (C) Aniline (D) Hydrazine
Calculate the emf of a platinum electrode immersed in an aqueous solution buffered at pH 4.3 where oxygen gas evoleves at a partial pressure of 2.50 atm at a temperature of 25 celcius. 2 H2O (l)----- O2 (g) + 4H+ (aq) + 4 e
Given that the atomic mass of carbon is given as 12.0107 g/mol, what are the approximate relative abundances of the two isotopes 12C and 13C?
State structures for the a variety of aldol condensation products you expect from the aldol self-condensation of 2-butanone,CH3C(=O)CH2CH3.
Problem- Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140M HClO(aq) with 0.140M KOH(aq). The ionization constant for HClO is 4.0*10^-8
separation of acetone from water by using mibk.a stream containing 30 wt acetone and the balance water is to be
Compute the pH of (a) a solution that is 0.060M in potassium propionate (C2H5COOK or KC3H5O2) and 0.085M in proprionic acid (C2H5COOH or HC3H5O2); (b) a solution that is 0.075M in trimethylamine, (CH3)3N, and 0.10M in trimethylammonium chloride, (..
Write balanced nuclear equations for the following transformations
How many grams of NaCl must be added to 250g water to lower the vapor pressure by 1.30 mm Hg at 40 degrees C assuming complete dissociation?
if 20. g or NaCl are used and only 5.6 g of HCl are isolated, what is the percent yield of HCl C.) If only 5.6 g of HCl are obtained, how many grams of Na2SO4 must also have been formed
What is the percent yield if 5g of anthracene-9-carbaldehyde (MW= 206.24) is used to make 4.8g of 9-strylanthracene
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