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Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)? The Ka for HOCl is 3.0 x 10-8 M. 2.What is the pH after 2.40 mL of NaOH are added
Calculate molality and mass percent of alcohol in the mixture. A solution of ethanol, C2H5OH, in water has a concentration of 1.996 mol L-1. At 20.0 ºC its density is 0.9677 g mL-1
The boiling point of water is about 200 degrees Celcius higher than one would predict from the boiling points of hydrogen sulfide and hydrogen selenide. One may explain this apparent anomaly by which of the following?
what is the volume of 45.6g of silver if the density of silver is 10.5g/ml?
The solubility of oxygen in water is 5.00M when the partial pressure of oxygen is 1.00 atm. Calculate the solubility of oxygen in water in contact with air
The rate constant for the decomposition of dinitrogen pentoxide to form nitrogen dioxide and oxygen gas has the rate constant 1.7 x 10-3 s-1. This is a first order reaction. How long would it take for for the reaction to be 39.00% to complete
Assume that 100.0 mL of 0.200 M of CsOH and 50.0 mL of 0.400 M HCl are mixed in a calorimeter. The solutions start out at 22.50 degrees celcius, and the final temperature after reaction is 24.28 degrees celcius.
A student adds an excess (more than she needs to react completely) of solid sodium hydrogen carbonate to a beaker containing exactly 675 mL of 0.220M coper(II)nitrate aqueous solution.
What is the principle quantum number for the inner transition metals? (the atomic numbers are 57 through 102, called the lanthanide series
When heated, KClO3 reacts to produce KCl and O2. How many grams of KClO3 are needed to produce 791 ml of O2 at STP conditions?
If 122 mL of a 1.2 M glucose solution is diluted to 550.0 mL, what is the molarity of the diluted solution?
The products of a specific reaction and the side products or impurities? Explain specifically what would be observed for this pair of compounds: 4-bromoacetanilide and 2-bromoacetanilide
Calculate the resulting pH if 455 mL of 0.200 M HCl is mixed with 315 mL of 0.0850 M Ca(OH)2.
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