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A sample of carbon dioxide of mass 2.45 g at 27.0°C is allowed to expand reversibly and adiabatically from 500 dm3to 3.00 dm3. What is the work done by the gas?
Suppose you want to do a physiological experiment that calls for a pH 6.5 buffer. You find that the organism with which you are working is not sensitive to the weak acid H2X (Ka1= 2x10^2, Ka2= 5.0x10^-7) or its sodium salts
The first step in industrial nitric acid production is the catalyzed oxidation of ammonia. Without a catalyst, a different reaction predominates: 4NH3(g) + 3O2(g) ? 2N2(g) + 6H2O(g) When 0.0230 mol gaseous NH3 and 0.0250 mol gaseous O2 are placed ..
the mri magnetic resonance imaging body scanners used in hospitals operate with 400 rm mhz radiofrequency energy.how
if you know the amounts of acid and base components in the buffer you can use the equation to find the ph. find the ka
You have to prepare a pH 5.06 buffer, and you have the following 0.10M solutions available: HCOOH, HCOONa, CH3COOH, CH3COONa, HCN, and NaCN. Which solutions would you use
Explain the mass of the electron is 9.11 x10-31kg. Planck's constant has the value h = 6.63 x10-34 J-s. Define what is the characteristic wavelength of this electron
What is the final concentration if 75.0ml of a 3.50M glucose solution is diluted to a volume of 400.0ml
Calculate the percent yield of this organic reaction- C7H6O2------->C12H16O2. Molecular weight of C7H6O2 is 122.12 amount used 100g, Molecular weight of C12H16O2 192.25 amount recovered 125.9 g
When 4-hydroxybutanal is treated with methanol in the presence of an acid catalyst, 2-methoxytetrahyrofuran is formed. Show the mechanism for this reaction.
Asumming equal concentrations of conjugate base and acid, which one of the following mixtures is suitable for making a buffer solution with an optimum ph
The oxidation of 748g of ammonium with 740g of Oxygen produces water and nitrogenoxide. Draw a chemical spread sheet to show what happens during a chemical reaction.
Presume you have isolated a new photosynthetic microorganism that oxidizes H2S and passes the electrons to NAD+. Explain what wavelength of light would provide enough energy for H2S to reduce NAD+ under standard condition.
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