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Determine the empirical formula of each of the following compounds. (Type your answer using the format CH4 for CH4 and list the elements in the same order as they are mentioned in the problem.) (a) 0.088 mol chlorine atoms combined with 0.22 mol oxygen atoms (b) 2.45 g silicon combined with 12.4 g chlorine (c) 27.3 mass % carbon and 72.7 mass % oxygen
The mass of an electron is 9.11 * 10^{-31} kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31*10^{-10}m, how fast is the electron moving relative to the speed of light?
What is the osmotic pressure, in atm, of a solution formed by dissolving 17.8 g of PbCl4 in 0.250 L of water at 64.4 oC? (R = 0.0821 L-atm/mol-K; 0 oC = 273 K)
How much water must be added to 488 mL of 0.223 M HCl to produce a 0.134 M solution?
Determine the boiling point of the solution If 11.9 grams of a nonelectrolyte with molar mass = 30.5 g/mol are combined with 200.0 grams of the solvent,?
Calculate the concentration of a solution of FeCl3 was prepared by dissolving 13.86 gm of FeCl3 in 2.5L of water.
35.00ml of a .500 M HCl was mixed with 25.00ml of a .500 M NaOH. What is the pH of the solution after mixing?
Copper(II) iodate precipitates from iodate solution. The formula of the precipitate is CU(IO3)2. A saturated solution of this substance was made in 0.01 M KIO3.
Calculate E for the cell. Assume all the H+ ions come from the first dissociation of H2SO4, which is complete.
The standard change in Gibbs free energy is deltaG= -32.8kJ/mol. What is deltaG for this reaction at 298K when the partial pressures are PNO= .200atm, PO2= .100atm, and PNO3= .850atm
A 5.0×101 sample of water absorbs 355 of heat.If the water was initially at 25.9, what is its final temperature.
What volume of methanol is formed if 3.11×1011 of methane at standard atmospheric pressure and 25 is oxidized to methanol
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 = 10.2..
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