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As a result of a chemical spill, benzene is evaporating at the rate of 1 gram per minute into a room that is 6 m * 6 m * 3 m in size and ahs a ventilation rate of 10m^3/min
a. Compute the steady-state concentration of benzene in the room. (I have already done this)
b. Assuming the air in the room is initially free of benzene, compute the time necessary for benzene to reach 95% of the steady-state concentration.
Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 2.00 mL of a 10.1 ?g/mL solution of Co.
A 20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
the half-life of tritium 31h is 12.3 years. if 47.0 mg of tritium is released from a nuclear power plant during the
The Ksp for Cr(OH)3 is 1.6 x 10?30. What is the molar solubility of Cr(OH)3 in a buffer solution with a pH of 11.5. Hint: what is the balanced reaction
For a 6.70kg of magnesium-lead alloy, is it possible to have the masses of primary (alpha symbol) and total (alpha symbol) of 4.23kg and 6kg respectively at 460°C(860°F)? Why or why not?
neutrons are very important in the fission of uranium the manufacture of the artificial isotope plutonium-239 and in
If the Ka of a monoprotic weak acid is 8.0 × 10-6, what is the pH of a 0.41 M solution of this acid
Calculate the molarity of the ions present in these salt solutions. Assume each salt to be 100% dissociated. a. 0.75M ZnBr2
Acetic anhydride is formed from acetic acid in a condensation reaction that involves the removal of a molecule of water from between two acetic acid molecules. Write the chemical equation for this process.
A solution is prepared by dissolving 18.536g of calcium nitrite in 183.544g of distilled water. Calculate the boiling and freezing points of this solution.
Suppose you have a copper nitrate solid. You are not sure, however, if the solid is copper (I) nitrate, CuNO3, or copper (II) nitrate, Cu(NO3)2. You dissolve a 0.1015 gram sample of this solid in water and nitric acid and then dilute it to a final..
The activation energy of a certain reaction is 52.9 kJ/mol. How many times faster will the reaction occur at 35 degrees C than at 25 degrees C
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