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For the thermal decomposition of nitrous oxide, 2N2O(g)-->2N2(g)+O2(g) , values of the parameters in the Arrhenius equation are A=4.2x10^9 s^-1 and Ea=222 kj/mol. If a stream of N2O is passed through a tube 30mm in diameter and 15cm long at a flow rate of 0.75L/min, at what temperature should the tube be maintained to have a partial pressure of 1.0mm of O2 in the exit gas? Assume that the total pressure of the gas in the tube is 1.30atm.
On size-exclusion chromatogram you have three peaks (2.9, 3.5, and 4.8 min). Column dead volume is 12 mL, and flow rate 4 ml/min. Are your separation conditions fit for size-exclusion requirements? Explain why.
collected over water at 22 degrees C and the total pressure of the wet gas were 710 mm Hg, what would be the partial pressure of the oxygen?
The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
Explain, using resonance as part of your answer, why a hydrogen adjacent to carbonyl groups (a-H's) are acidic. b. Give the mechanism for the Claisen ester condensation reaction.
It requires 20.65 mL of 0.3000 M NaOH solution to titrate both acidic protons in 40.00 mL of the tartaric acid solution Write the net ionic equation.
At what temperature will air (MW=29) have the same density as helium at 300 K, both gases at the same pressure.
Chlorine has an average atomic mass of 35.453 amu. The main isotopes of chlorine are 35Cl which has an atomic mass of 34.968 amu and 37Cl, which has an atomic mass of 36.956amu. Given this, what is the percent abundance of each isotope in natural ..
Calculate O's aqueous solubility in surface waters of this lake. B.) Will the amount of O2 produced by photosynthesis cause O2's aqueous solubility to be exceeded in 1L of this lake water
Write balanced molecular, ionic and net ionic equations for each reaction that occurred in experiment
Draw lewis Dot structures. Use model kits, styrofoam balls and/or gum drops to make a model of the molecule or ion. Be sure to place electron groups (toothpicks or sticks) as far apart as possible.
A certain acid HX is dissolved in water to make a 0.10M solution. At equilibrium, the concentration of X^- ions is 1.0 x 10^-5 M. The Pka of HX is approximately?
134 mole of KCl and .167 mole of CaCl2 were dissolved in water. What is the total number of Cl ions in the solution?
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