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From the values of ?H and ?S, predict which of the following reactions would be spontaneous at 25 degrees celsius. Reaction A: ?H = 10.5 kj/mol, ?S = 30.0 J/K*mol Reaction B: ?H = 1.8 kj/mol, ?S = -113 J/K*mol
A solution is prepared by mixing 4 ml of .20 M NH3, 1 ml of .20 M HCl, and 5 ml of water. Calculate the concentration of NH3 and NH4+ in the final diluted solution.
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 92% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9* 10-12.]
its molar mass is 71.61 g/mol, how many grams of this compound must you burn to release 866.80 kJ of heat?
if it takes 526 j of energy to warm 7.40 grams of water by 17 degrees celsius how much energy would be needed to warm
consider the expansion of one mol of a monoatomic gas initially at 300 k and 10 atm. the expansion to a final pressure
a gas has a volume of 95 mL at a pressure of 930 torr. what volume will the gas occupy if the pressure is increased to 970 torr?
When 85.0 g of CH4 are mixed with 160 g of O2 what is the maximum amount of CO2 that can be produced?
What is the phenomenon that occurs when excited gaseous elements emit only a few colored lines? a. Planck's constant
If 1.500 g of solute having molar mass of 125.0 g were dissolved in 35 g of camphor, what would be the resulting freezing point of the solution?
What length of mirror drive in a Michelson interferometer is required to produce a resolution sufficient to separate a) infrared peaks at 500.6 and 500.4 cm-1
How much heat is required to warm 223 g of ice from -45.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 7.60x10^2 cal of work done on it
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