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A student tried this identical procedure with a slight modification on a gel antacid. The student dissolved 3.00 mL in 25.00 mL of a standardized HCl solution containing 1.727 *10^-2 mol of HCl. The back titration of the excess HCl required 4.62 mL of 1.015M NaOH solution.
a) Compute the molar concentration of the HCl solution that the student used.
b) Compute the number of moles of HCl neutralized by the antacid tablet.
c) Compute the volume of the effectiveness of the gel.
Show each step of the formation of the most likely hydroperoxides from the metal catalyzed oxidation of linoleic acid
When filling a cuvette with distilled water and measuring it with a spectrofluorometer, upon excitation at 350nm, a band around 397nm appears. This is either a fluorescence band or a Raman band. Suggest what you can do experimentally to identify w..
A balloon equipped with a UV spectrometer was flown in the stratosphere to measure the [O_3] at an altitude of 25 km. The spectrometer had an absorbtion path length of b= 1000.0 m and measured a transmittance of T = 0.6952. Determine the concentr..
According to Hund's Rule, how many unpaired electrons are in the valence shell of element 10?
If you add a solvent called "dioxane" to water, a homogenous mixture forms. Dioxane and water have the same boiling point (100oC). How do you explain that the mixture of the two compounds shows a boiling point that is lower than the one found for ..
Give the formula of the compound formed from the following elements. (Type your answer using the format CO2 for CO2.) (a) sulfur and cesium (b) sulfur and barium (c) rubidium and bromine
a 738 ml sample of nitrogen n2 was collected by displacement of water at 24c under a total barometric pressure of 1270
if both the pressure and volume of a given sample of an ideal gas are doubled what happens to the temperature of the
Experimentally it was observed that naphthalene could be selectively ionized by sequentially absorbing three photons at a wavelength of 363.24 nm. What was the experimental ionization energy for naphthalene in kJ/mole
A solution of Na3AsO4 is added dropwise to a solution that is 0.0643 M in Bi3+ and 0.000180 M in Cd2+. What concentration of AsO43- is necessary to begin precipitation
The ionization constant, Ka, for HOI(aq), hypoiodous acid, is 2.3 × 10-11. What is the pH of a 0.050 molar solution of sodium hypoiodite, which contains the hypoiodite ion?
Synthetic polypeptides can assume an helical structure under appropriate conditions. Indicate whether polylysine and polyglutamate form an helix
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