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Acetylene gas, , burns in oxygen to produce carbon dioxide and water. If 60.4 g of CO2 are produced when 22.62 c2h2 react with sufficient oxygen, what is the percent yield for the reaction?
At 25 °C and 795 Torr, carbon dioxide has a solubility of 0.0356 M in water. What is its solubility at 25 °C and 2030 Torr?
The Kb of ammonia is 1.8 x 10-5. What is the percent ionization of a solution of ammonia, 0.50 mol L-1 NH3, that contains 0.020 mol L-1 of ammonium nitrate, NH4NO3
A voltaic cell operating under standard conditions (1.0 M ion concentrations) utilizes the following reaction: 3 Pb(s) + 2 Co3+(aq) 3 Pb2+(aq) + 2 Co(s) What is the effect on the cell emf of each of the following changes
How do I calculate the concentration of the lycopene solution in the spectrophotometer cell before isomerization, given that the molar absorptivity of lycopene at 471 nm is 1.86 x 10^4.
buffer solution that has [H2PO4-]=[HPO4-2]=0.132 M. What is the pH of the solution before adding NaOH? After adding NaOH?
What is an alternative analytical procedure for determining the quanity of water in a non-aqueous sample?
If 2.09 g SO2 react with excess oxygen and water, how many grams of H2SO4 are produced?
Draw the following compound. Be sure to specify the stereochemistry via wedge-and-dash bonds.
Assume that the amino acids with ionizable side chains have the following pKas: Asp 3.65; Glu 4.25; His 6.0; Lys 10.53, Arg 12.48; Cys 8.18; Tyr 10.07. Also Assume that the a-amino group has a pKa of 9.62, and the a-carboxyl group has a pKa of 2.3..
Which response gives all of the members of the following list that are acidic salts and none that are not acidic salts. KH2PO4, K2HPO4, K3PO4, NaHCO3, LiOH, LiH
For the copper zinc cell the potential at 25 degrees C is 1.10 volts. The reaction is: Cu++ (aq) + Zn(s) = Zn ++ (aq) + Cu(s) Calculate the equilibrium constant for this reaction (a wire is connected and electrons flow between the electrodes)
Determine the mean and 90% confidence interval for the average fluoride concentration in this sample.
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