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A large weather balloon filled with helium as a volume of 7.00 x 102 L at STP. Which expression should be used to find the mass of helium in the balloon?
equilibrium constant, Kp, for the reaction = 0.295 (at 400 degrees C.)then write the kp of the reaction and Calculate kc at 400 degree Celsius.
salicylic acid reacts with methanol to produce oil of wintergreen and water. If water is added to the solution, a precipitate is formed. identify the precipitate and explain why it is formed.
Calculate the percent yield for an experiment in which 5.50 g of SOCl2 was obtained in a reaction of 5.80 g of SO2 with excess PCl5
A box contains a mixture of small copper spheres and small lead spheres. The total volume of both metals is measured by the displacement of water to be 423 cubic centimeters and the total mass is 4.30kg.
the forward reaction in equation 1 is catalyzed by the enzyme phosphoglucoisomerase as part of glycolysis - a common
Determine the minimum mass of Sodium bicarbonate or sodium hydrogen carbonate that should be added to the spill to neutralize it?
For a Voltaic Cell involving Pb as the anode and Ag as the cathode, what would be the initial voltage of the cell if the initial concentration of Pb2+ was 0.5M and Ag+ was 0.1M
What is the theoretical yield (in grams) of gold when 1.378 L of hydrogen gas (density = 0.0902 g/L) reacts with 20.14 g of gold(III) chloride in solution
A solution is colorless in phenolphthalein and blue in bromcresol green. Therefore we can conclude that the pH of the solution
A 35.0 mL sample of 0.225 M HBr was titrated with 42.3 mL of KOH. What is the concentration of KOH?
The standard enthalpy of combustion of solid urea (CO (NH2)2) is -632 kl mol-1 at 298 K and its standard molar entropy is 104.60 J K-1 mol-1, Calculate the standard Gibbs energy of formation of urea at 298 K.
The initial rates at various substrate concentrations for an enzyme-catalyzed reaction are as follows. [S]/M.............Vo/10^-6 M/min 2.5x10^-5.......38.0 4x10^-5.........53.4 6x10^-5.........68.6 8x10^-5.........80.0 16x10^-5.......106.8 20x10^..
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