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0.10M potassium chromate is slowly added to a solution containing 0.50 M AgNO3 and 0.05 M Ba(NO4)2. What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaCrO4 are 1.1 x 10^-12 and 1.2 x 10^-10 respectively.
Some enzymes are produced as zymogens because a) the reactions they catalyze are undesirable at the site of production
Aluminum has a specific heat of 0.900 J/g·°C. How much energy is required to raise the temperature of 160. g of aluminum from 20.0°C to 183.0°C?
What volume of concentrated nitric acid (16 M NHO3) will be needed to prepare 250 mL of 0.3 M HNO3
calculate the pH of the solution that results when 40.0 mL of 0.100 M NH3 is mixed with 20.0 mL of 0.100 M HCl solution.
If a customer replaces a 85 watt bulb with an 20 watt compact fluorescent bulb that lasts 5000 hours, how much less coal (lbs)will be used to generate the electricity that is saved?
What is the total number of joules absorbed by 65.0 g of water when the temperature of the water is raised from 25.0 degrees celsius to 40 degrees celsius?
Kn1 knowledge and understanding of atomic and molecular structure, chemical bonding, chemical formulas, chemical equations, mole calculations and the mole concept and the relation between elements of the Periodic Table.
When extracting caffeine from coffee, is it better to do two extractions with 10 mL of methylene chloride or one extraction with 20 mL of methylene chloride. Why.
Write an equation for the formation of the salt that could be formed by reaction of one molecule of adipic acid with two molecules of ethylamine
In hydrogen bonding does the Hydrogen have to be connected to an O, N or F in its own molecule and be bonded to a O, F or N with another hydrogen
The density of solutions are assumed to be the same as water. If the density of all 3 solutions was actually 1.1 g/mL, how would the heat of the reaction be affected?
A solution of ammonia and water contains 4.50×1025 water molecules and 5.30×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
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