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The vapor pressure of water at 60°C is 0.196 atm. In order to reduce the vapor pressure to 134 torr (1 atm = 760 torr), how much propylene glycol (condensed formula: CH2(OH)CH(OH)CH3) must be added to 0.450kg of water?
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Suppose a tank is filled with A2(g) so that initial pressure is 0.8688 atm at temperature of 298K. Some of the A2(g) dissociates and when the system reaches equlibrium the total pressure in the tank is 1.275 atm. Calcula ...
Hydrazine, N2H4, is dibasic and has Kb1 = 3.35x10-7 and Kb2 = 1.42x10-16. Calculate the concentration of OH- ions in a 29.91 M aqueous solution of hydrazine. Express your answer in mM.
A student finds that the mass of an object is 6.62 kg. She is told that her measurement has an error of 12.3%. What is the true mass (in kg) of the object?
Assume that you dissolve 10.2 g of a mixture of NaOH and Ba(OH)2 in 227.0 mL of water and titrate with 1.47M hydrochloric acid. The titration is complete when 107.8 mL of the acid has been added. What is the mass (in gra ...
Calculate the number of moles of barium chloride in 427g of a 3.17% by mass barium chloride solution?
What is the volume of a solution with a concentration of 1.2 M that contains 12 g of NaOH?
Hydrogen peroxide was catalytically decomoposed and 75.3 mL ofoxygen gas was collected over water at 25 degrees celsius and 742torr. What mass of oxygen was collected? (Pwater =24 torr at 25 degrees celsius)
How do the colors seen by the naked eye compare to the emission spectra emitted by the flame
How many water molecules are associated with a single salt molecule in a hexahydrate?
When the concentration of A in areaction was changed from 1.20 M to 0.600M, the half -lifeincreased from 3-00min to 6.0 min at 250C. Calculate theorder of reaction and the rate constant.
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