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The decomposition of dinitrogen pentoxide in carbon tetrachloride solution at 30 °C
N2O52 NO2 + ½ O2
is first order in N2O5 with a rate constant of 4.10×10-3 min-1.
If an experiment is performed in which the initial concentration of N2O5 is 0.197 M, what is the concentration of N2O5 after 435 minutes have passed? __________ M
you are given solid AgNO3, distilled water and 250ml volumetric flask. describe how to make up the required solution
Problem- A 25ml sample of .15M hydrazoic acid is titrated with .15M of NaOH solution. What is the pH at the equivalence point. Ka of hydrazoic acid is 4.5*10-4.
A sample in a 1.0 mm cell absorbs 75.0% of the incident light at 510 nm. If the solution is 0.075 M, its molar absorptivity (M-1 cm-1) is:
A peice of gold (10.0-g, C of Au = 0.129 J/g-K) is heated to 100.0 degrees Celcius. A peice of copper (also 10.0-g C of Cu = 0.385 J/g-K) is chilled in an ice bath to 0 degrees Celcius.
The concentration of methane in the biogas leaving an anaerobic digester (part of a wastewater treatment system) is 55% (volume basis) at 50 °C. The remaining 45% is CO2.
For the molecule shown below, choose all the statements that are true. Soluble is where at least 10 drops of the compound can be added to a particular solvent (in this case, water or hexane -- CH3CH2CH2CH2CH2CH3) and the result is one homogeneous ..
A bicycle tire is filled with air to a pressure of 75. psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius. The volume of the tire increases by 4.0%. What ..
The density of the sample is 1.01 g/mL. The titrant is 1.017 M NaOH. The average volume of titrant required to titrate 25.00 mL subsamples of the vinegar is 20.78 mL.
The typical plant produces 750 tons of H2SO4 per day. Calculate amount of heat produced by the plant per day.
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295 K, and the volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1mL atm K-1..
Infrared spectroscopy----How would you know if you used too much liquid and what would you do about it. what will damage the salt plates
The mass percent of urea (formula CH4N2O) in a solution prepared by dissolving 16g of urea in 39g water is: a). 29% b). 0.29 % c). 16% d). 71%
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