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Neohetramine, C16H21ON4 (285.37 g/mol), is a common antihistamine. A 0.8224-g sample containing this compound was analyzed by the Kjeldahl method. The ammonia produced was collected in 15.00 mL of 0.1082 M HCl, and the excess HCl required 5.99 mL of 0.0983 M NaOH for titration. Calculate the percentage of nehohetramine in the sample.
A compound was analyzed and found to contain 40.00% carbon, 6.72% hydrogren, and 53.25% oxygen with a molar mass of 180.0 grams.
The answer to formula and calculation, survey of physical chemistry, State all of the assumptions (e.g. ideal gas etc). (previous reaction is 2H??2(g) + O2(g) ----> 2H2O(g))
What are the poles of the following transfer functions?
Use the following data to plot the inflection points for the heating curve of 1 mole of solid octane at its melting point, -56.8 degrees C. The first point should be at -56.8 and the last point should be at 150 degrees celcius.
What is the percent yield of a reaction in which 274 g phosphorus trichloride reacts with excess water to form aqueous phosphorus acid (H3PO3) and 105 g HCl?
How many moles of PbI2 are formed? What is the concentration of KNO3? What is the remaining concentration of the reactant that was in excess?
Using a sample of a compound containing only oxygen and chlorine reacts with an excess of H2 gas to give 0.206 g water and 0.278 g HCl
The amino acid glycine is often used for biochemical buffers. The amino group of glycing can exist in a protonated form or as a free base (pKa 9.6).
Calculate the concentration of HC2H3O2 or NH3 in each of the solutions you measured. By how many units did the pH of a solution of a weak base or acid
State what are the most common agents in polymer degradation
To what two classes of compounds can primary alcohols be oxidized? What determines which product results from such an oxidation? Please provide complete answer for both of the questions
Consider the unbalanced equation above. A sample of impure mercury(II) oxide is heated and the HgO decomposed completely. If 580. mL of O2 is collected by displacement of water at a barometric pressure of 790.0 mm Hg and 25.0°C,
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