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What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical reaction?
V2O5(s) + 5Ca(l) → 2V(l) + 5CaO(s)
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
One mechanism of fragmentation is loss of a neutral radical by cleavage of a bond from which one electron lost. What is the m/z ratio of the most stable cationic fragment that can be generated from dexchlorpheniramine by this mechanism?
Sulfur trioxide dissolve in water, producing H2SO4. How much sulfuric acid can be produced from 13.5 mL of water and 26.1g of SO3?
A saturated solution of Pb(IO3)2 in pure water has a lead ion concentration of 5.0 x 10-5 Molar. What is the Ksp value of Pb(IO3)2?
An aqueous solution of NaNO3 is 22.0% NaNO3 by mass. The density of the solution is 1.127 g/mL. Calculate the molality, the molarity and the mole fraction of NaNO3.
a positive ion ESI mass spectrum of a protein showed a peak at m/z = 1001 resulting from the adition of 10 protons. what is the actual mass of the uncharged protein?
Carbonyl fluoride, COF2 is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride
14 g of Si reacts with 16 g of O to produce SiO2, the only product, with no reactant left over. How much SiO2 would be produced from 34 g of Si and excess O?
What volume and mass of steam at 100 degrees celsius and 760 torr would release the same amount of energy as heat during condensation as 65.5 cm(cubed) of liquid water would release during freezing?
0.74 L of a 0.41 M solution is diluted to a final volume of 3200 mL. What is the resultant molarity?
Using the values for the resonance energies of benzene and naphthalene given above, explain why Diels-Alder reactions of anthracene take place at the center ring, not one of the end rings.
A 150.0-g sample of a metal at 75.0 °C is added to 150.0 g of H2O at 15.0 °C. The temperature of the water rises to 18.9 °C. Calculate the specific heat capacity of the metal, assuming that all the heat lost by the metal is gained by the water.
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