Calculate the wavelength of radiation transmitted
Calculate the wavelength of radiation transmitted f from a FM radio station which operates at a frequency of 91.3MHz(Megahertz).(c=2.9979 x 10^8 m/s)
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For a one step reaction, the activation energy for the forward reactio is +40.0 kJ / mol and the enthalpy of reaction (ΔH) is +20 kJ/mol. What is the activation energy for the reverse reaction?
A 0.45 M solution of pentanoic acid (CH3CH2CH2CH2COOH) is found tohave a pH of 3.73 at 298K. What is the value of the acid dissociation constant Ka for this monoprotic acid?
Why does H3O+ concentration have more influence on the precipitation of the salt of a weak acid, such as CaC2O4, than on the precipitation of the salt of a strong acid, such as AgCl or CaSO4?
What is the purpose of applying the three amino acid sequence RGD to the surface of biomaterials? Through what cell surface receptor does the RGD interact with?
Use notation showing the symbol, the mass number as asuperscript and the atomic number asa subscript. Write the mass of the isotopes and their abundance.
Enormous numbers of microwave photons areneeded to warm macroscopic samples of matter. A portion of soup containing 235 g water is heated in a microwave oven from 21°Cto 90.°C, with radiation of wavelength 1.55 10-2 m.
If you react 100 ml of a 0.115 M Solution of HBr (aq) with98.0 ml of a 0.120 M solution of KOH(aq), how many moles are actually neutralized? After mixing, will the resulting solution have excess acid,excess base, or neither?
You react 100.0 ml of a 1.01 M HBr(aq) solution with 99.1 mlof a 1.05 M KOH(aq) solution. The density of each solution is 1.04g/ml. The heat capacity of the calorimeter is 7.0 J/C.
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