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The Fe2 (55.845 g/mol) content of a 2.214 g steel sample dissolved in 50.00 mL was determined by tiration with a standardized 0.140 M potassium permanganate (KMnO4, 158.034 g/mol) solution. The titration required 38.15 mL to reach the end point. What is the concentration of iron in the steel sample? Express your answer as grams of Fe per grams of steel (g Fe2 / g steel).
Calculate the number of grams of sulfuric acid in 0.460 of battery acid if the solution has a density of 1.27 and is 37.8 sulfuric acid by mass.
calculate the H3O+ concentration in an aqueous solution at 25*C with an OH- concentration of 3.00 x 10^-2M
Empirical and Molecular Formula of Cadaverine, Cadaverine, a substance produced by the action of bacteria on meat, contains 58.55% C , 13.81% H , and 27.40% N.
When you go on the protein databank and look at the Ramachandran plot, it gives you 4 plots (general case, glycine, proline, and pre-proline).
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
Determine the precipitate that forms if silver nitrate aqueous solutions and KCl react to produce products in a double-replacement reaction.
What is the mass of one mole of the gas when the density of a gas is 0.0151 g/mL at 150 degrees Celsius and 1.50 atmospheres?
It takes 49.0 J to raise the temperature of an 11.7 g piece of unknown metal from 13.0 C to 24.0 C. What is the specific heat for the metal?
If 37.3 g of CO2 is produced in the reaction of C2H2 with O2 to form CO2 and H2O, how many grams of H2O are produced in this reaction.
What is the theoretical yield(in grams) of aspirin ,C9H8O4, when 2.00g of salicylic acid,C7H6O3, is reacted with4.00g of acetic anhydride
Stellar nuclear fusion begins with 1H and ends with 56Fe. Younger stars fuse hydrogen to form 4He, while older, more massive stars fuse helium to form heavier elements.
Derive an expression for (dH/dp)T soley in terms of T, p, V. Show that this quantity is identically zero for an ideal gas and find the equivalent expression for a van der Waals gas
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