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Calculate the mole fraction of bromine in water in both solutions below, and the molality of bromine in both solutions presuming that the density of water is 1 g/cm3.
The halogen bromine (Br2) is a liquid at room temperature (25 degree C) and somewhat soluble in water. A saturated solution of Br2 contains 3.3 x 10-4 g Br2 dissolved in 1 g H2O at room temperature. On the other hand bromine is somewhat more soluble in very cold water. A saturated solution of Br2 in water at (0 degree C ) contains 4.2 x 10-4 g Br2 in 1 g H2O.
Do you think you can calculate the % of ethanol in the distillate by comparing an average boilling point of the 5 ml portion which comprise the distillate
The vapor pressure of pure ethyl bromide at this temperature is 400.0 torr. Assuming an ideal solution, what is the molecular mass of the compound?
Why Carboxylic acids are stronger acids than Phenols?
It was found that 19.31 mL of an HCl solution are needed to react completely with 322 mL of a LiOH solution that has a pH of 11.56. What is the molarity of the HCl solution?
Gaseous methane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water. What is the theoretical yield of carbon dioxide formed from the reaction of of methane and of oxygen gas
The balloon then drifted up into the Earth's atmosphere. Assuming the air pressure does not change, determine the volume of that helium balloon when it is 10km above Earth, where the atmospheric temperature is -53 degrees Celsius.
Calculate the change in enthalpy for the Mg-HCl reaction using standard enthalpies of formation. Delta Hf for HCl(aq)=-167.2kJ
Activating effects question: Using resonance contributors, explain why the nitrile group is a deactivator and a meta director in electrophilic aromatic substitution. A drawing would be helpful too.
which characteristic defines the main difference between a basic buffer system and an acidic buffer system?a basic
a 25.0g sample of calcium chloride is dissolved in water to give 6.52 * x10^2 ml of solution. What is the concentration of the resulting solution in calcium, and what is the total ion concentration
When sodium carbonate reacts with hydrochloric acid, the carbonic acid that is formed immediately breaks down into carbon dioxide and water. What weight of sodium carbonate would have been present originally
Draw the skeletal structure and write the name of the major organic product obtained in the following reactions. (a) styrene and 1 mol H2 over Pd
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