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Define what is the constant if the frequency is 4.46 x 10 to the 14th power Hz and the wavelength is 670 nm?
A sample of apple juice has a hydrogen ion concentration of 1.69 x 10^-6 M. Determine the pH of this sample
what is the maximum [ATP]/[ADP][Pi] ratio compatible with ATP synthesis assuming that the number of protons trans-located per ATP formed is 2, the temperature is 25C and the change of pH is 0.75?
Dinitrogen pentoxide, N2O5, decomposes by first-order process with a rate constant of 3.7 x 10-5 s-1 at 298K. a) What is the half-life in hours for the decomposition of N2O5 at 298 K
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
A student has been asked to titrate an HCl solution with a concentration of 0.35 M against an unknown concentration of NaOH solution. He found that he used 24.35 ml of HCl in order to neutralize 36.44ml of NaOH.
at an altitude of 19350 feet atop mount kilimanjaro in kenya the boiling point of water is 81 degrees celsius.
Describe an experiment using only hot and cold water that would enable you to verify that the heat capacity of your coffee cup calorimeter is about 1.0 x 10-1 J/oC
question calculate the standard emf at 25degc of the propane fuel cell given that delta gdeg formation for propane
how long will it take to deposit 89 g of magnesium from an electrolysis cell containing mgo at a current of 12.5. a
describe the underlying concepts of how laboratory activity works. descreption should be at least half page
A container with 1 mole of gas is expanded from 5 litres to 10 litres by adding more gas. the temperature and pressure are kept constant. how many moles of gas are present after the expansion.
Calculate the Gibbs free energy of the separate components, the Gibbs free energy of the mixture and the Gibbs free energy of mixing
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