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1. Uranium is distributed in a form called yellow cake, which is made from uranium ore. In the second step of the reactions that form yellow cake from uranium ore, uranyl sulfate, UO2SO4, is converted to (NH4)2U2O7. 2UO2SO4 + 6NH3 + 3H2O → (NH4)2U2O7 + 2(NH4)2SO4
a. What is the maximum mass, in kilograms, of (NH4)2U2O7 that can be formed from the reaction of 100 kg of water and 100 kg of ammonia with 481 kg of UO2SO4?
b. Explain why two of these substances are in excess and one is limiting.
2. Consider the neutralization reaction that takes place when hydrochloric acid reacts with solid nickel(II) carbonate.
a. Write a conversion factor that relates moles of HCl to moles of NiCO3 for this reaction.
b. What is the minimum volume of 6.0 M HCl necessary to react completely with 14.266 g of solid nickel(II) carbonate, NiCO3?
Calculate the mass of sodium required to produce 80 grams of sodium hydroxide by direct reaction with water: 2Na(s) + 2H2O(l) = 2NaOH(aq) +H2(g) (s) = solid, (l) = liquid, (aq) = water solution aqueous mixture and (g) = gas
Calculate the percent ionization of nitrous acid in a solution that is 0.190 M in nitrous acid (HNO2) and 0.310 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 x10-4.
How many grams of of ethylene glycol are needed per kilogram of water to protect the radiator fluid against freezing down to -10C
It takes 42 min for the concentration of a reactant in the first order reaction to drop from .45 M to .32 M at 25 degrees celcius. How long will it take for the reaction to be 90% complete.
how many mL of 0.122M MnO4^-1 are required to react with an excess of C2O4^2- in order to produce 75.25 mL of carbon dioxide gas measured at 30.0 degree c and 715 torr?
Optical fibers allow the fast transmission of vast amounts of data. In one type of fiber, the wavelength of transmitted light is 1.3 X 10^3nm. (a) What is the frequency of the light
Sufficient of a monoprotic acid is dissolved in water to produce a 0.0133 M solution. The pH of the resulting solution is 2.42. Compute the Ka for the acid.
When 5.00g of copper reacts with oxygen, the copper oxide product has a mass of 5.62g. What is the empirical formula of this copper oxide? MM Cu= 63.5, O= 16.0
Suppose you had started with 3.25 moles of sodium hydrogen carbonate,how many moles of sodium chloride would you expect to be formed?
1) Solid iodine crystals at the bottom of a closed test tube sublime to form iodine vapor. The vapor eventually fills the entire test tube. Use kinetic molecular theory to explain the diffusion of the iodine gas and whether diffusion happens in li..
A semipermeable membrane separates two solutions. On one side of the membrane the concentration of sodium ions is 0.87 mol/L, and on the other side the concentration of sodium ions is 2.5 mol/L.
The dry ice is allowed to sublime and the mixture is allowed to return to 25.0 degrees Celsius. what is the total pressure in the flask?
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