500 kg of n-propanol are accidentally discharged into a body of water containing 1e8 liter of water...

139) 500 kg of n-propanol are accidentally discharged into a body of water containing 1e8 liter of water. By how much is the BOD(mg/L) of this water increased?

a body of water in equilibrium with solid calcium sulfate CaSO4, for which Ksp = 4E-5 at 25 degrees C. Calculate the solubility of calcium sulfate...

196) Consider a body of water in equilibrium with solid calcium sulfate CaSO4, for which Ksp = 4E-5 at 25 degrees C. Calculate the solubility of calcium sulfate in water (in grams/liter) assuming that other reactions are negligible.

About 3.2 kg of H2 is required for a vehicle to have a 500 km range...What tank pressure atm might one expect at 25 degrees celsius?..

109. Consider a vehicle powered by hydrogen gas. a. About 3.2 kg of H2 is required for a vehicle to have a 500 km range. Assume ideal gas behavior and a storage tank of 60 L (a comparable size to conventional gasoline vehicles). What tank pressure atm might one expect at 25 degrees celsius? b. Since their discovery in 1991, tiny graphite-like cylinders known as nanotubes have been widely researched. These nanotubes (1-3 nm in diameter) have high tensile strength, high electrical conductivity, and a high surface area. Hydrogen can readily abosrb onto these carbon fibers. The textbook indicates that these nanotubes can absorb three times their weight in H2. What minimum amount of this carbon... click for more

At an altitude of 45.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?

At an altitude of 45.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?

Equil. ratios; pH; pE values, etc. (Not sure where to start on this)

Deduce the equilibrium ratio of NH4+ to NO3- at a pH of 4.0 for aerobic water having a pE value of +9.0 and for anaerobic water for which the pE value is -7.0. (Provide the aerobic answer in the first field and the anaerobic in the second.)