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A piece of iron mass=25.0g at 398 K is placed in a Styrofoam coffee cup containing 25.0mL of water at 298 K. Presuming that no heat is lost to the cup or the surroundings, explain what will the final temperature of the water be? Define the specific heat capacity of iron= 0.449 J/g degree C and water = 4.18 J/g degree C.
The solubility of a compound is 59g per 100ml of boiling methanol and 30g per 100ml of cold methanol, whereas its solubility in water is 7.2g per 100ml at 95°C and 0.22g per 100ml at 2°C. Which solvent would be better for the recrystallization of ..
If the enery of the products is less than the energy of reactants then the speed of collision has no effect on the rate of the reaction. B) The energy of the collision of molecules must be great enough to overcome the bond energy of the products.
if a frying pan needs a teflon coating that is 1.00 mm thick and the area to be covered is 36.0 square inches how many
Instead of 6 M NaOH being added to the test solution, 6 M HCl is added. How will this affect the test for the presence of ammonium ion in the solution? Explain.
how would you prepare pentanenitrile from butanoic acid? show the reaction steps indicating the appropriate reagents
What is the pH of the solution created when 10.0 mL of 0.50 mol/L nitric acid is diluted to 1.50 L
one of the most acidic lakes in the united states is little echo pond in the adirondacks in new york. recently this
propane reacts with oxygen in the air to produce carbon dioxide and water. In a particular experiment, 38.0 grams of carbon dioxide are produced from the reaction of 22.05 grams of propane with excess oxygen.
Enzymes in the human liver catalyze a large number of reactions that degrade ingested toxic chemicals. By what factor is the rate of a detoxification reaction changed
What percentage of tablets contain contain more than the standard amount of 250 mg acetaminophen per tablet? The mean value is 244.53mg and the standard deviation value is 11.88
assuming the volumes of all gases in the reaction are measured at the same temperature and pressure calculate the
0.22 litre of an idealmonatomic gas cv 3r2 initially at 12 deg c and 1.7 atmpressure undergo an expansion against a
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