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Oxygen is a common oxidizing agent in nature. What changes in the oxidation number of oxygen must occur if it is to be an oxidizing agent?
The solubility of AgCl(s) in water at 25 degrees C is 1.33*10^-5 mol/L and its deltaH0 of solution is 65.7 kJ/mol.
Need to calculate the heat formation of products, but have heat of formation for NaCl of concentration 1mol/L.
calculate the mass of sodium nitrate required to produce 7.00 grams of oxygen according to the following reaction: 2NaNO3 = 2NaNO2 + O2
The heat of combustion of hexane is 995.0 kcal/mol. How much energy is released during the complete combustion of 453 grams of hexane ?
Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone.
How many electrons are present in an atom with its 1s, 2s, 2p, and 3s subshells filled and with 4 electrons in the 3p subshell? What is the element?
Calculate the mass percent of a solution that is prepared by adding 32.2 g of NaOH to 262 g of H2O.
KEtones also undergo the aldo condensation, although a succesful reaction often requires "enhanced" conditions, since the addition involves an unfavorable equilibrium constant.
An airplane is pressurized to 650 mm,Hg}, which is the atmospheric pressure at a ski resort at 1.30×104 ft altitude. If air is 21 % oxygen, what is the partial pressure of oxygen on the plane?
Draw a diagram showing the stratification in a body of water. Label the different layers and describe the type of chemistry (and species) that occurs at each level.
Compute the typical thermal energy of a water molecule at normal conditions: (kB T) and compare it to the answer of the previous problem
What must the oxygen content (in percent by volume) be when the total pressure exerted on the diver is 4.0 atm?
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