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if ethyl chloride (density=0.92 g/mL) were used to extractethylene bromohydrin (density +2.41 g/mL) from an aqueous solution: a.) Can you be certain that the organic layer would from the upper layer? Eplain in details. b.) How could you test to determine which is the non aqueous layer? Explain in details.
For the reaction 2A + B --> 2C, if B is initially 4.0M and 2min later is 3.0M, what is the rate of appearance of C?
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.323 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 24.5°C, what is the minimum temperature reached by the solution?
A 2.30-g sample of a large biomolecule was dissolved in 16.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
A compressed gas cylinder contains 1.00 x 103 g of argon gas. The pressure inside the cylinder is 2050 psi at a temperature of 18oC. How much gas remains in the cylinder if the pressure is decreased to 650psi at a temperature of 26oC?
The double-replacement reaction between silver-nitrate and sodium bromide produces silver bromide, a component of photographic film.
A sample of 1.42 g of Helium and an unweighed quantity of Oxygen are mixed in a flask at room temperature. The partial pressure of Helium is 42.5 torr and of oxygen is 158 torr.
Suppose that an excess of propane, C3H8 burns in 320 g of O2. How many moles of H2O will be formed
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 870 mL at 40C and a barometric pressure of 755 torr.
The professor wants us to do the following: Outline all steps in the possible synthesis of each of the following compounds from benzene and / or toluene
A 10.00 mL sample of a solution of hydrofluoric acid,HF, is diluted to 500.00 mL. A 20.00 mL sample of the diluted solution requires 13.51 mL of a 0.1500 M NaOH solution to be titrated to the equivalence point.
After 42 days a 2.0 g sample of phosphorus 32 contain only 0.25 g of the isotopt. what is the half life of the phosphours 32 ?
Half-life equation for first-order reactions: (the 1/2 in t1/2 is a subscript) t1/2=0.693/k where t1/2 is the half-life in seconds (s) , and k is the rate constant in inverse seconds (s^-1).
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