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At 30oC, the decomposition of hydrogen iodide into hydrogen and iodine is a second-order reaction. The rate constant for the reaction at 30oC is 0.120 L*mol-1*s-1. How long does it take an initial concentration of 0.150 mol/L to reduce to one-quarter the initial concentration?
How many moles of NaOH must be added to 0.550 L of 0.191 mol/L HC3H5O2(aq) to obtain a solution with pH=4.7? Assume the temperature is 25oC. (For HC3H5O2, pKa=4.89 at 25oC).
Formulas and constants to remember R = 1.98 cal/degree-mole ; Delta G0 = -RT lnKeq. T = 298 degrees K. How much NADH will be produced in the above reaction
Given that the Ka for hypochlorous acid is 3.0x10^-8 determine the number of moles of sodium hypochlorite needed to prepare this solution.
what is the molality of a solution of glucose that contains 48.0 g of c6h12o6 dissolved in 410.0 g of water? use molar
What volume in liters of O2(g) is required to form 46 L of CO2(g)? Assume both gases are measured under the same conditions.
Consider an aqueous solution that is saturated with lead iodide, lead sulfate and 0.10 M K2SO4 (a strong electrolyte). Write mass and charge balance equations that describe the system
calculate the de broglie wavelength for each of the following.a 57 g ball with a velocity of 35. ms b an electron with
Multiple choice questions in Radioactive Decay - electron emitted from the nucleus during some kinds of radioactive decay is known
sample of 30.0 ml of krypton gas kr is at 756 mm hg and 25.0 degree celsius. what is the new volume if the pressure is
consider the decomposition of the compound c5h6o3 as given. c5h6o3 g rarr c2h6 g 3 co g and determine k for this
Diamonds are measured in carats where 1 carat= 0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 2.50-carat diamond
It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath. To what temperature (oC) will the oil bath need to be heated to first open the safety valve?
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