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Consider an electron moving from an n = 2 orbital to an n = 1 orbital. For this to occur, will the atom need to absorb energy or dissipate energy by releasing a photon of electromagnetic radiation? Is the n = 2 orbital more or less stable than the n = 1 orbital?
The rotation constant for H2 is 60.80 cm-1 the harmonic frequency is 4395.3 cm-1 and the anharmonicity constant is 117.90 cm-1. calculate the frequency at which the Q branch first overtone will be found.
Which of these given nutrients is likely to limit production if the light supply is adequate and there is no nitrogen fixation?
when taking a tlc plate and recording the Rf values what must you always write down in order for someone else to be able to reproduce your work
A sample consisting of 3.0 mol of ideal gas molecules at 200K at 2.00 atm is compressed reversibly and adiabatically until the temperature reaches 250K.
It is estimated that more than 5 billion metric tons of CO2 is added to the atmosphere each year. Assume that CO2 is an Ideal gas at 25 oC and 1 atm.
A 2.30-g sample of a large biomolecule was dissolved in 16.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
You dissolve 1.00 gram of an unknown diprotic (two titratable protons) acid in 200.0 mL of H2O. This solution is just neutralized by 5.00 mL of a 1.00 M NaOH solution. What is the molar mass of the unknown acid?
calculate the moles of silver bromide and magnesium nitrate produced by 85 mol of magnesium bromide reacting with silver nitrate.
A chemist wants to make 5.5L of a 0.280M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use
What is the heat change in J associated with 15 g of solid ethanol at -177 oC changing to gas at 146 oC?
4.236-g sample of a hydrocarbon (CxHy) is combusted in O2 completely to give 3.810 g of H2O and 13.96 g of CO2. What is the empirical formula of the hydrocarbon?
What is the half-life of a compound if 78 percent of a given sample of the compound decomposes in 45 min? Assume first-order kinetics.
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