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What is the wavelength (in nm) of a photon emitted during transition from the n=3 state to the n=1 state in the H Atom?
Which of the following is correct? A) Solubility is the concentration of unsaturated ions in solution. B) Ksp is the same as the solubility. C) Ksp is an equilibrium constant and solubility is the concentration of a saturated solution
How to carry out a calorimetry experiment to determine the delta H for the exothermic reaction of Ca(OH)2 (s) and HCl (aq). Predict how each of the following will affect the calculated value of Delta H.
Trichlorofluoromethane (CCl3F) boils are 23.8C and its molar heat of vaporization is 24.8 kj/mol. Calculate the molar entropy of evaporation of CC3F (l)
The specific internal energy of helium at 300k and 1 atm pressure is 3800j/mol and the specific molar volumeat thesame temp. and pressure is 24.63l/mol.
The activation energy of a reaction is the difference between the energy states of reactants and the products
Careful spectral analysis shows that the yellow light of the sodium lamp is made up of photons of two wavelengths, 589.0 nm and 589.6 nm. What is the difference in energy (in joules) between photons with these wavelengths?
Assume the products are all gaseous. Show all your work. What is delta G and is the reaction spontaneous at 298K or nonspontaneous
A solution of hydroiodic acid is 0.057 M HI. What is the hydronium-ion concentraion at 25 degrees C?
A fixed quantity of gas at 21 exhibits a pressure of 730 and occupies a volume of 4.40. Use Boyle's law to calculate the volume the gas will occupy if the pressure is increased to 1.85 while the temperature is held constant.
What is the molarity of a solution prepared by dissolving 13.1 g of glucose (of MW 180 amu) in 217 mL of solution?
calculate the energy (in kJ) of a photon which has a wavelength of a mircowave with a wavelength of 2.84 cm
Assume that the buret represenst H+ ions, the flask represents OH- ions, and you are carrying out a titration of the base with the acid.
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