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For each of the following reactions, calculate the grams of indicated product produced when 20.0 g of each reactant is used: a) 4Al(s)+3O2(g)-->2Al2O3(s) (Al2O3). b) 3NO2(g)+H2O(l)-->2HNO3(aq)+NO(g) (HNO3). c)C2H5OH(l)+3O2(g)-->2CO2(g)+3H2O(g) (H2O).
Describe how biological membranes are organized: what roles do lipids and proteins play in this organization
soultion containing 10e-3 mol of dissolved Ag+ demonestrate that AgCl precipitate from the solution and calculate the wight og AgCl in grams that form per liter. Assume that all activities coefficients are equal to one.
The enzyme D-amino acids oxidase has a very high turnover number because the D-amino acids are potentially toxic. The Km for the enzyme is in the range of 1 to 2 mM for the aromatic amino acids and in the range of 15 to 20 mM for such amino acids ..
Calculating Value of Kb in Substances and pKb for Base, Codeine (C18H15NO3) is a weak organic base. A 5.0x10-3 solution of codeine has a pH of 9.95.
The heat of vaporization of water is 44.0 {rm kJ/mol}. Calculate the quantity of energy released when enough water vapor condenses to form 0.42 inches of rain over an area of one square mile.
Doubling the distance between an individual and the source of radiation reduces the radiation exposure to one-fourth the original value.
he maximum contaminant level (MCL) for barium (Ba) in drinking water is 2.0 mg/L. Barium can combine with sulfate (SO42-) to form BaSO4(s), which precipitates out of the water. This can be achieved by adding Na2SO4
Assuming the heat absorbed by the styrofoam is negligible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 K-1.
At what temperature in Celsius would the rate be 5.000 times faster than it is at 36.6 degrees Celsius for a reaction with an activation energy of 16,243 J/mol?
Uric acid dissociates with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated and unprotonated forms
Enough of a monoprotic acid is dissolved in water to produce a 0.0137 M solution. The pH of the resulting solution is 6.48. Calculate the Ka for the acid.
you are given solid AgNO3, distilled water and 250ml volumetric flask. describe how to make up the required solution
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