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What is the main overall driving force for any spontaneous reaction or change?
How many liters of O2 are needed to react completely with 45.0L of H2S at STP? 2H2S(g) + 3O2(g) -> 2SO2(g) +2H20(g)
Calculate the enrichment factor (i.e. the ratio of the diffussion rate of 235 UF6 to 238 UF6 for this method?
Calculate the percent ionization of hydrazoic acid (HN3) in solutions of each of the following concentrations
What is the hybridization of the nitrogen atom in sulfathiazole, and assuming the sulfur atom is sp2 hybridized how many electrons are there in the sulfathiazole ring
Silicon has a FCC structure with unit cell edge of 5.43A and 4 atoms per init cell. a) how many silicon atoms are there in 1cm3 of material b) suppose you dope that 1 cm3 sample of silicon with 1ppm of phosphorus that will increase the conductivit..
Caffeine is a stimulant found in coffee and tea . A solution of caffeine in chloroform as a solvent has a concentration of 7.9 x 10^-2m. What's the percent of caffeine by mass? Calculate the mole fraction of caffeine.
A 32.22 g sample of a metal that looks like aluminum is heated to 99.8 C in hot water. The metal is then quickly transferred into exactly 50.0 ml of water at 22.9 C in a calorimeter
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What would be the potential of t..
A perfect cube of aluminum metal weighs 20.00g. The density of of aluminum is 2.70 g/ml. What are the dimensions of the cube?
For a mass of 0.010 g Mg and 5.0 mL of 1.00 M HCl, calculate the partial pressure of the resulting H2(g) in a flask with V = 145 mL at 25?C.
The numerical value of Kc depends on the form of the balanced equation. D) When quoting Kc it is customary to omit units.
What is the silver ion concentration for a saturated solution of Ag2CO3 if the Ksp for Ag2CO3 is 8.4 x 10^-12
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