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The iodine molecule can be photodissociated into iodine atoms in the gas phase with light of wavelengths shorter than about 792 nm. A 100.0 mL glass tube contains 55.7 mtorr of gaseous iodine at 25 degrees celsius. What minimum amount of light energy must be absorbed by the iodine in the tube to dissociate 15.0% of the molecules?
A chemist dissolves 284 mg of pure potassium hydroxide in enough water to make up 140 mL of solution. Calculate the pH of the solution.
If a 34.32 ml solution with a pH of 1.21 was mixed with a 1.0000 gallon solution of 0.00010000 M NaOH, what would be the final pH and how many grams of each product would be formed
A solution is prepared by dissolving 17.6g Ammonium sulfate(NH_4)_2SO_4 (Molar Mass: 132.17g/mol) in enough water to make 121.0mL (0.121L) of stock solution. A 12.30mL (0.0123L) sample of this stock solution is added to 59.00mL of water. Calculate..
An NaOH solution contains 2.6 mol of NaOH, and its concentration is 1.3 M. What is its volume?
How reliable is the perfect gas law in comparison with the van der Waals equation? Calculate the difference in pressure of 10.00g of CO2 confined to a volume of 100cm3 at 25 degrees Celsius between treating it as a perfect gas and a van der Waals ..
assume that while titration of vinegar sample with standard naoh takes place you misread the buret and the observed
An element X forms the oxalate complex X2C2O4 which is 7.91% C and 21.07 % O by mass. What is the identity of the Element X
Ammonia is often produced by reacting nitrogen gas with hydrogen gas. How many liters of ammonia gas can be formed from 23.5 L of hydrogen gas at 93.0°C and a pressure of 34.7 kPa?
You have synthesized a new compound: the crude product melts at 102-106 degrees C. You spend a little time purifying it and do the melting point again. What range would you expect the m.p. to be for the purified sample? Explain your reasoning brie..
An empty vial has a mass of 67.77 g. If the vial has a mass of 244.56 g when completely filled with liquid carbon terachloride (d = 1.59 g/cm3), what is the volume of the vial?
we did the grignard reagent experiment and one of the post-lab questions iswhat kinds of solvents cannot be used? give
The freezing point of pure camphor is 178.4 oC, and its molal freezing-point constant, Kf, is 40.0 oC/m. find the freezing point of a solution containing 3.00 g of a compound (molar mass = 125 g/mol) dissolved in 45.0 g of camphor.
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