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Tetrafluorethylene (C2F4) effuses at rate of 4.6X10^-6 moles per hour. Unknown gas effuses at rate of 6.5X10^-6 moles per hour. under identical conditions, what's the molar mass of the unknown gas?
In the reaction AH3 +H+ = AH4+, AH3 has a dipole moment and AH4+ does not. Predict the number of lone pairs that may exist on A in AH3. Hint: Find more than a single number of lone pairs that work.
Using the method of successive approximations, what is [H3O+] in 0.500 M (Ka= 1.1*10^-2) and how many iterations (n) are needed to validate that a constant value had been obtained
volume of 2.25 L at 278 K and 1.01 atm. Calculate the pressure when the volume is 1.95 L and the temperature is 303 K.
Copper metal is purified by electrolysis. How much copper metal could be produced from copper(II) oxide by applying a current of 10.0 amps at the appropriate negative potential for 12.0 hours
The slope of an arrhenius plot between ln k and 1/t for a reaction is -0.66x10^4 K, and the y intercept is 11.25. what is the activation energy and the frequency factor of the reaction respectively?
Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 10.82 g of ethane is mixed with 62.90 g of oxygen.
How many mL (to the nearest mL) of 0.200-M KF solution should be added to 660. mL of 0.193-M HF to prepare a pH = 3.30 solution
a mixture of carbon monoxide co carbon dioxide co2 and oxygen o2 is contained within a 275 ml flask at the temperature
A rock that contains 3.0 10-15 mol of 232Th (t1/2 = 1.4 multiplied by 1010 yr) has 7.7 104 fission tracks, each track representing the fission of one atom of 232Th. How old is the rock
What mass of carbon dioxide is present in 1.00m^3 of dry air at a temperature of 25c and a pressure of 731torr? Calculate the mass percentage of oxygen in dry air.
Calculate the rate constant for proton transfer to NH3. What relaxation time would be observed if a temperature jump were applied to a solution of 0.15 mol dm-3 NH3(aq) at 25?C
what is hte mass in mgs of solute in 737 mL of a solution that contains 6.38 ppm of Pb(NO3)2 and please explain work
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