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A reaction is known to be zero order in [SOCI2] and second order in [CH3CN]. The reaction rate constant is 2.1 x 10^2 M^-1 s^-1. What fraction of the original amount of SOCI2 is present after 40 seconds of reaction time elapsed?
10 ml of .1 M phosphoric acid is titrated with .1M NaOH. After 10 ml of NaOH has been added the pH is 4 What is the ratio of H3PO4/H2PO4 - at this point
A 86 gram solution of silver nitrate contains 14 grams of AgNO3. What is the percent by mass of silver nitrate in this solution.
typically when a person coughs he or she first inhales about 2.40 l of air at 1.00 rm atm and 25 circ rm c. the
Octane has a density of 0.692 g/mL at 20 C. How many grams of O_2 are required to burn 1.50 gal of C_8H_18?
A copper refinery produces a copper ingot weighing 131 lb. If the copper is drawn into wire whose diameter is 8.25 mm, how many feet of copper can be obtained from the ingot
Calculate the concentrations of all species in a 0.750 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
(R)-(3-Chloro-2-methylpropyl) methyl ether (A) on reaction with azide ion (N3-) in aqueous ethanol gives (S)-(3-azido-2-methylpropyl) methyl ether (B). Compound A has the structure ClCH2CH(CH3)CH2OCH3. Draw the wedge-dash, wedge-line formula for A..
a race car is traveling in a clockwise direction around a circular track with a constant speed of 200 kmhr. if is at
A gold alloy has a density of 12.4g/ml and contains 75%gold by mass. calculate the volume of this alloy that can be made from 255 g of pure gold.
For the D3h point group draw 3X3 transformation matrix for each of the operations of this point group on a set x,y,z coordinate
For the first-order reaction, 2N2O---> 2N2 + O2, what is the concentration of N2O after 3 half-lives if 0.15 mol of N2) is initally placeed into in a 1.00-L reaction vessel
What is the molarity of an NaCl solution prepared by dissolving 9.3g NaCl in sufficient water to give 350mL of solution.
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