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A 0.025 M monoprotic weak acid is titrated with a 0.10 M NaOH solution at 25°C and the pH at the half-equivalence point is found to be 2.85. What is the percent ionization of this weak acid at 25°C?
Given the information below, what is the value of the unknown equilibrium constant?
The rate of an enzyme-catalyzed reaction usually increases with temperature, but then decreases after reaching the "optimal temperature."
a if 2.0 kg of fe2o3 and 1.5 kg of co are reacted what is the maximum amount of iron that can be produced?b if the
The reaction 2NO ? N2 + O2, has a rate constant of 3.6 x 10^-2 M^-1 s^-1. When [NO]= 2.8 x 10^-3 M, what is the rate of change in M.s^-1 for N2
this solution was added 1.960 grams of KI and 50.00 mL of a 0.00923 M KIO3 solution. The excess I3- was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
Construct a spontaneous voltaic cell using the following materials: A Ni(s) electrode, a copper electrode, a 1.0 M Ni(NO3) (aq) solution and a 1.0 M CuSO4 (aq) solution.
A 0.4647-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.8635 g of CO2 and 0.1767 g of H2O.
A gas mixture is made by combining 7.9 g each of Ar and Ne and an unknown diatomic gas. At STP the mixture occupies a volume of 18.73 L.
containing too little oxygen to allow complete combustion of the fuel is called a rich mixture. A high-performance heater that burns propane, C3H8(g), is adjusted so that 100.0 g of O2(g) enters the system for every 100.0 g of propane. Is this mix..
If the laser is pointed toward a pinhole with a diameter of 1.0 mm, how many photons will travel through the pinhole per second? Assume that the light intensity is equally distributed throughout the entire cross-sectional area of the beam. (1 W = ..
How much heat is required to convert 32 g of ethanol at 27 degrees C to the vapor phase at 78 degrees C?
The following temperature/ composition data were obtained for a mixture of two liquids A and B at 1.00 atm, where x is the mole fraction in liquid and y the mole fraction in the vapor at equilibrium.
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