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A qunatity of .300 grams of copper was deposited from a CuSO4 solution by passing a current of 3.00 Amperes through a solutiong for 304 seconds. Using this information calculate the value of the faraday constant.
What is the geometric structure of acetone (CH3)2CO. Indicate the bond angles and specify if they are non-ideal. Help?
The vapor pressure of pure methanol, CH3OH, at 30 C is 160. torr. How many grams of the nonvolatile solute glycerol, C3H5(OH)3, must be added to 131. g of methanol to obtain a solution with a vapor pressure of 133. torr.
Compute the increase in entropy when 3.50 moles of an ideal gas is heated from 250 K to 700 K and simultaneously expanded
What is the heat change of H 2 O If the final temperature of the mixture = 25 degree celsius?
Calculate the rate constant of the catalyzed and uncatalyzed reactions. How many folds of rate enhancement are produced by the enzyme? The rate constant is 13.46 but what is the nuber of folds of enhancement that are produced by the enzyme?
When a He atom absorbs a photon to form the excited configuration 1s^1 2s^1 (here called He*) a weak bond forms with another He to form the diatomic molecule HeHe*. Construct a molecular orbital description of the bonding in this species.
Find the pH of a solution after 0.10 mol of HCl is added to 1.0 L of a buffer solution that contains 1.40 M NH3 and 0.90 M NH4+.
If 113 g of Pb(NO3)2 reacts stoichiometrically according to the balanced equation, how many milliliters of 2.96 M aqueous NaI are required?
it is found that 1.431g of element x ciontains 7.509 *10^21 atoms. calculate the atomic mass of x
A chemist prepares a solution by dissolving 4.168 g of NaNO3 in enough water to make 200 mL of solution. What molar concentration of sodium nitrate should appear on the label.
What is the maximum mass of aspirin (the theoretical yield) that could be produced in this reaction?
How many liters of water are required to dilute 6.23mL of 12.2M HClO4 to make a solution with a pH of 2.34? Write your answer as 1.2E1L
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