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Which elements exist as molecular species in their most stable states at 25 degrees C and 1 atm? iodine, magnesium, sulfur, cesium, carbon, oxygen, phosphorus, neon
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 9.80..
Calculate the pH of a solution resulting from the titration of 50mL of 0.04M HBr with 25 mL of 0.107M KOH. Give your answer to two decimal places
Pd has a FCC lattice in which hydrogen atoms occupy octahedral holes. If 70% of the holes are filled by hydrogen atoms and the lattice does not expand upon hydrogenation, how many grams of hydrogen will be contained in one cubic centimeter of the ..
What will be the effect of f electrons not sheilding completely on the size and ionization of energy of mercury? Use calculations for illustration if needed
Advantages and disadvantages of using Alternative Fuel and Would you consider buying one of these in the future? Why or Why Not and Why do you think there are not more of these vehicles in use?
In the nitration of methyl benzoate, why do you wash the crystals with water followed by an ice-cold methanol washing? What is the purpose of pouring the reaction mixture over ice?
Using electronegativity, predict in the order of decreasing polarity the following bonds: N-P, N-O, N-C, N-S, N-F. Predict how valence electrons would pair up in the AsO4-3 ion.
The dipole moment of hydrogen chloride is 1.08D while that of hydrogen bromide is 0.82D. On the basis of dipole-dipole interactions, hydrogen chloride should have a higher boiling point than hydrogen bromide. The opposite is the case, however. Why
A tank contains 40 lb. of air, 20 lb. of CO2 and 30 lb. of SO2. Compute the volume of the tank if the total pressure of the mixture is 44.08 psi at 86°F. What is the partial pressure of each constituent and the average molecular weight of the mixt..
Preparing solutions for biochemical experiments, In preparation for a protein purification experiment, you have been asked to prepare 100 mL of an aqueous solution of Tween20
The MnO4(-) is often used to analyze for the Fe(2+) content of an aqueous solution via the reaction MnO4(-)+Fe(2+)---> Fe(3+)+Mn(2+) in acidic solution. What is the ration Fe(2+):MnO4(-) in the balanced equation
Calculate the entropy change of the surroundings associated with this heat transfer. Assume the weight of an average adult is 80.0 kg.
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