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Calculate the standard free energy change in kJ between Br2 and Cl- to form Br- and Cl2 when all components of the reaction are at standard state conditions.
A bird is flying around the world at a rate of 8.85 ft/sec. How many days will it take to complete its journey? (circumference of earth = 24,900 miles.
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00kg of water that is at the EPA limit for lead.
determine the empirical formula of a dead alkaline battery if ofund to contain a compound of Mn and O. Its analysis gives 69.6% Mn and 34.4% O
Benzoic acid can be extracted from an ether solution using an aqueous solution of sodium bicarbonate.
How much energy in kilojoules is required to convert 100 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL.
Which of the following is the correct formula for the hydrate of copper (ii) sulfate that has 5 waters of hydration per formula unit? A.CuSO4-5H20 B. 5H2O-CuSO4
sotonic saline solution, which has the same osomotic pressure as blood, can be prepared by dissolving 0.923 g of NaCl in enough water to produce 100.mL of solution. What is the osmotic pressure of this solution at 25 ?C?
the standard free energy change for the reaction of nitrogen gas with hydrogen gas to produce ammonia is -32.9 kj.
when the zinc coating on an iron can is scratched, rust does not form. use the activity series to explain why this happens.
How should a professional emergency responder be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
Calculate the pH of a buffer solution made by mixing 46.8 g of sodium acetate into 1 L of a 0.1 M solution of acetic acid. Give the pH to two decimal places.
Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane. The equilibrium constant for this reaction at 28 degrees Celsius is 2,900.
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