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The concept of free energy allows prediction of spontaneity of a process by considering the changes in ________ and ________ during the process. entropy; mass enthalpy; temperature enthalpy; entropy entropy; temperature enthalpy; mass
A sample of nitrogen gas had a volume of 500.ml, a pressure in its closed container of 740 torr, and a temperature of 25 degrees celsius. What was the new volume of the gas when the temperature was changed to 50 degrees celsius and the new pressur..
a liter of solution contains .10 mol of Ag+ and .10 mol of Ba+2. if a highly concentrated solution of K2CrO4 is added drop by drop which will precipitate first. Ag2CrO4 or BaCrO4
Why is it preferable to use a metal ion buffer to achieve pM = 7, rather than just dissolving enough M to give a 10-7 M solution?
Why does clove oil float on the surface of the aqueous distillate rather than sinking to the bottom?
A substance has a molar mass of 60 g/mol with 40.0 percent carbon, 6.7 percent hydrogen, and 53.3 percent oxygen. What is its empirical formula?
What volume of the stock solution 1.05 M would contain the number of moles present in the diluted solution 8.00×10?2 mole
Ethanol and gasoline are both automobile fuels. If gasoline is selling for $4.50, what would the price of ethanol have to be in order to provide the same amount of heat per dollar.
Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 8.00 of aluminum sulfate, Express the number of moles of Al, S, O, and atoms numerically, separated by commas.
Suppose that the microwave radiation has a wavelength of 10.8cm . How many photons are required to heat 295mL of coffee from 25.0 ^\circ \rm C to 62.0 ^\circ \rm C
If the average human body discharges 925.0g CO2 per day, how many moles of NaOHare needed each day for each person in the spacecraft?( 42.04 mol NaOH)
what is the ph of a solution prepared by mixing 50.0ml of 0.125M KOH and 50.0 ml of 0.125M HCl
Use the appropriate values of Ksp and Kf to find the equilibrium constant for the following reaction: FeS(s)+6CN^-(aq)->
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