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The decomposition of HI(g) is represented by the equation 2HI(g) H2(g) + I2(g) Kc= 64 at 25°C. If the equilibrium concentrations of H2 and I2 at 400°C are found to be [H2] = 9.3x10-4 M and [I2] = 1.6x10-3 M, what is the equilibrium concentration of HI?
If solar radiation is 1010 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation.
What is the correct charge balance equation for an aqueous solution of MnCl2 that ionizes to Mn2 , Cl-, MnCl , and MnOH.
What length of mirror drive in a Michelson interferometer is required to produce a resolution sufficient to separate a) infrared peaks at 500.6 and 500.4 cm-1
what are the electronic configurations of Pb and Pb2+, also Mo and Mo2+. please explain what are their valence electrons.
Sodium peroxide (Na2O2) reacts with water to form sodium hydroxide and oxygen gas. Write a balanced equation for the reaction and determine how much oxygen in grams
A semiconductor of n-type is know to have an electron concentration of 3 x 1018 m-3. If the electron drift velocity is 100 m/s in an electric field of 500 V/m
A sample of vapor occupies a volume of 125 mL at 100 degrees C and 748 torr. What is the volume of the same sample under STP conditions?
The tank can hold a pressure of 50.0 atm before bursting. During a fire the gas is heated to 500 C. What is the gas pressure, and will the tank contain the gas without bursting
A scientist wishes to prepare a 1L sample with the approximate composition of seawater for use in the laboratory: what reagents would you recommend and what mass of each
Molecular chlorine, Cl2, is a green gas. Sketch a few of the rotational, vibrational, and electronic energy levels of Cl2 on the same diagram to relative scale.
commercial concentrated aqueous ammonia is a solution of 28.0%, by mass, ammonia, NH3, (molar mass=17.0 g/mol) in water. the density pf the solution is .900g/mL.
Calculate the density of a solution of benzene and toluene mixed at 1:1 weight ratio at 20 degree C and 1 atm, given that ?(benzene) = 0.8790 g/cm^3 and ?(toluene) = 0.8668 g/cm^3 at 20 degree C and 1 atm.
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