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If the half life for a second order decomposition of HI is 15.4 s while the initial concentration of HI is .67M. Explain what is the rate constant for the reaction?
A. 1.0 *102 M-1S-1B.4.5*10-2 M-1S-1C. 9.7*10-2 M-1S-1D. 2.2*10-2 M-1S-1E. 3.8*10-2 M-1S-1
Show that the ammonium ion NH4+, 1ppb(mole fraction) is equivalent to 0.56 ppb (mass fraction) or .74 ugm-3 at T=298 and 1 atm. Start by solving for mass concentration Note that mass fraction is related to mole fraction as
Offer a reasonable explanation to account for the unequal ratio attained (2% of one isomer and 98% of the other isomer) in the reaction of BH3 (and the solvent diglyme) with 2-methyl-2-butene.
a compound was analyzed and was found to contain the following percentages of the elements by mass barium 89.56 oxygen
a mixture of carbon monoxide co carbon dioxide co2 and oxygen o2 is contained within a 275 ml flask at the temperature
could the separation in this experiment have been done in a different order? for example if mixture were first
an ice cube tray holds 515 g water. if the water initially has a temperature of 21degc how many kilojoules of heat must
A certain radiation has a wavelength of 474 nm. What is the energy, in joules, of (a) one photon
A researcher suspects that the pressure gauge on a 49.9-L gas cylinder containing nitric oxide is broken. An empty gas cylinder weighs 135 lb. The weight of the partially full cylinder is 164.2 lb.
Why two different proteins that are both 1500 amino acids long would travel together through the polyacrylamide gel in a single band containing both of the two different proteins.
A block of metal has a width of 3.2cm, a length of 17.1cm, and height of 3.3cm. Its mass is 1.5kg. Calculate the density of the metal.
Chromium in it's +VI oxidation state is considered a hazardous, carcinogenic species, destruction of which may be accomplished by the process symbolized as: If 1.0 mol of each reactant is mixed, what is the limiting reagent, and what is the theoret..
During a photochemical smog episode in a coastal city, the steady-state concentration of oxygen radicals at ground level was measured to be 0.09 ppmv at 25 degrees celsius.
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