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Question: A sample of N2(g) was collected over water at 25 degrees Celcius and 730 torr in a container with a volume of 340 mL. The vapor pressure of water at 25 degrees Celcius is 23.76 torr. What mass of N2 was collected?
Energy cost of dissociation was found to be 4 kWh/m3 of CO2. Calculate conversion degree of CO2 into CO and O2 in this system.
what is the work in joules done on the system to compress he gas from 24.0 l to 12.5 l against a pressure of 1.5 atm at
An object has a mass of 50.0g. When it is dropped into a graduated cylinder containing 15mL of water, the water level in the cylinder rises to 32mL.
Radio waves are very low energy forms of electrmagnetic radiation. What is the energy of a mole of radio wave photons with a
Formulas and constants to remember R = 1.98 cal/degree-mole ; Delta G0 = -RT lnKeq. T = 298 degrees K. How much NADH will be produced in the above reaction
The acid-dissociation constant for an acid-base indicator HIn is 0.0000438. At 600 nm, the molar absorptivities are 2230 for HIn and 8900 for In-. Calculate the absorbance at 600 nm of a 1.00 x 10-4 M solution of the indicator at pH 4.81 in a 1.00..
What is the maximum concentration of Cd2+ that can exist in a solution in which the S2- concentration is 2.5 x 10-6? Ksp(CdS) = 8.0 x 10-27
an old container of koh has been found in the chemistry lab. a 4.00 g sample of this impure koh is dissolved in 30.0
Oxygen gas can be generated by the decomposition of potassium chlorate according to the following equation: 2KClO3(s) = 2KCl(s) + 3O2(g). How many liters of oxygen at STP will be produced when 0.216 kg of KCl is also produced
What are the values of Ka and pKa for lactic acid? b. Calculate the pH of a .10M HCN solution, which has a Ka = 1.4x10^-9 at 25C. Assume that the dissociation of HCN is negligible compared to its initial concentration.
In a certain industrial process involving a heterogenous catalyst, the volume of the catalyst (in the shape of a sphere) is 10.0cm cubed. If teh sphere were broken down into eight spheres each having a volume of 1.25cm cubed
Draw the Newman projection and the corresponding potential energy diagram of "n-butane" conformers, rotating along C2-C3.
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