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Carotenoids, present in all organisms' capable of photosynthesis, extend the range of light absorbed by the organism. They exhibit maximal capacity for absorption of light in the range of 440-470 .nm
Compute the energy in kilojoules represented by absorption of an Avogadro's number of photons of wavelength 465nm.
Write a balanced net ionic equation for the reaction of each of the following aqueous solutions with H+ ions.A) Sodium fluoride
How do you determine the mass of a AA battery. Why does the battery weigh less when it it dead. What does the Law of Conservation of Mass have to do with this.
Why do aldehydes undergo nucleophilic addition faster than ketones? Explain based upon the transition state (applying Hammond's principle) and electronic and steric actors.
Explain the reaction between ethyl iodide and hydroxide ion in ethanol (C2H5OH) solution, given below, has an activation energy of 86.8 kJ/mol as well as a frequency factor of 2.10 1011 M-1s-1.
calculate the change in entropy (?S), the change in internal energy (?U), and the change in enthalpy (?H) for a reversible adiabatic expansion of this gas to a final pressure of 1.10 atm. Also calculate the final temperature (T) and volume (V).
explain why rutherford expected all alpha particles to go through the gold foil undisturbed.
What volumes of .50 M HNO2 and .50 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH= 3.55? Calculate the pH of solution formed by mixing 100 mL of .100 M NaF and 100 mL of .025 M HCl.
Confirm that the z-component of orbital angular momentum is a basis for an irreducible representation of A2 symmetry in C3v.
A 773 mL sample of NO2 gas is at STP. If the volume changes to 648 mL and the temperature changes to 15ºC, what will be the new pressure in atmospheres
How many grams of FeSO4.(NH4)2SO4.6H2O (MW = 392.14) must be dissolved and diluted to 250.0 mL to prepare an aqueous solution that is 10.00 ppm Fe2+ by weight (1.00 ppm = 1.00 mg/L)
Some solution has an H+ concentration of 10^-10 M. if this solution could be diluted so its new H+ concentration is now 0.01 of the original. what would be the new H+ concentration in M and new pH
A sample of neon (Ne) occupies 1700 mL at STP. At constant pressure, what temperature is necessary to increase the volume to 2100 mL?
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