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calculate the N12+ concentration of a solution made by mixing .020 mols of Ni(NO3)2 into 1.0 L .22 M NH3?
A sample of pure NO2 is heated to 334 degree C at which temperature it partially dissociates according to the equation 2NO2(g)-->2NO(g)+O2(g)
Do the three staggered/eclipsed conformations of butane have the same ENERGY?
a tank contains a mixture of 2 mol Cl2, 5 mol O2, and 3 mol CO2 at 0 C and under a total pressure of 1 atm. calculate the partial pressures of each gas in the mixture
nickel ion forms the complex ion hexaamminenickel (II) with a formation constant of(Kf) of 5.6 x 10 ^8. initially the complex is formed when .002 M nickel sulfate is added to .10 M ammonia.
a student found that 0.0025 moles of NaOH was used in titration. how many moles of fatty acids where in the sample
How many liters of oxygen gas, at standard temperature and pressure, will react with 25.0 grams of magnesium metal? 2 Mg + O2 yields 2 MgO
Dehydration of 2-methyl-2-pentanol forms one major and one minor organic product. Draw the structures, including hydrogen atoms
Deuterium oxide (D2O, where D is deuterium, the hydrogen-2 isotope) has an ion-product constant, Kw, of 8.9 x 10^-16 at 20 *C (degrees Celsius). Calculate [D+] and [OD-] for pure (neutral) D2O at this temperature.
If the spectrophotometer that was used was miscalibrated so that each absorbance reading was too high by 0.100 units
For 100 g mol of a gas mixture of 75 mol % CH4 and 25% H2, calculate the total heat of combustion of the mixture at 298 K and 101.32 kPa, assuming that combustion is complete.
what is the frequency of the photons emitted by hydrogen atoms when they undergo transistions from n=5 to n=3
Calculate the theoretical amount of oxygen based on your starting mass of reactant. Then calculate the percent yield when you compare your actual yield to this theoretical yield.
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