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A ground state H atom absorbs a photon of light that has a wavelength of 97.3 nm. It then gives off a photon that has a wavelength of 486 nm. What is the final state of the H atom? Please explain why you choose the values you do for N1 and N2 of the Rydberg formula.
Given the following equilibrium constant at 25 C, calculate the equilibrium constant for the unknown reaction below.
cacl2 nahco3 phenol red --gt produces a yellow solutionphenol red is an h-indicator. the skeleton reaction ish
ocat standing in front of a blackboard covered with molecular formulas proceeds to explain how it is the citric acid in grapefruit burns up the fat.
If sample of sodium is dropped into a container of water the reaction is 2Na +2H2O ---> 2NaOH +H2. If 10.4 g of hydrogen are produced, how many g of NaOH are also formed
How many moles of gas are present when you collect 35.83 mL of the gas over water at 25.3?C and 0.97 atm?
A gaseous mixture of O2 and Kr has a density of 1.184 g/L at 385 torr and 300. K. What is the mole percent O2 in the mixture?
How many mL of 36 % (g/g) HCl should be diluted to 1.0 L to make a 6.0 M HCl solution? The density of 36% HCl is 1.18 g/mL.
A flask contains 0.180 of liquid bromine br2, . Determine the number of bromine molecules present in the flask.
If 0.7438 g of potassium hydrogen phthalate is used and the equivalence point occurs at 33.00 mL of NaOH, calculate the molarity of the NaOH solution to the correct number of significant figures.
A solution contains 1.0 x 10^-5 M Na3PO4. What is the minimum concentration of AgNO3 that would cause precipitation of solid Ag3PO4 (Ksp= 1.8 x 10^-18)
When heated, the DNA double helix separates into two random-coil single strands. When cooled, the random coils form the double helix
The reaction caused the temperature of the water to rise from 21.0 to 24.7 ^\circ \rm C. What is the enthalpy of this reaction. Assume that no heat is lost to the surroundings or to the coffee cup itself.
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