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Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following transitions
1. n=5---->n=1
2. n=5----->n=4
3. n=6----> n=5
which observed color band corresponds to the largest energy difference between levels and which is the smallest?
List the molecular geometry and the electron pair arrangement of all possibilities that would give a polar molecule when all the surrounding atoms are identical.
Air bags in automobiles inflate when sodium azide, NaN3, rapidly decomposses to its component elements: 2NaN3(s)-----2Na(s)+3N2(g). a)how many moles of N2 are formed by the decomposition of 2.50 moles of NaN3
Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom. Molecular oxygen binds irreversibly to the Fe(II) atom in heme.
we are asked to explain the ph and how to find hydrogen ion concentration.find the ph of an acidic substance of your
A solution of a weak acid was tested with the indicators used in this experiment. The colors observed were as follows
At 900 K the following reaction has Kp = 0.345. 2 SO2(g) + O2(g) 2 SO3(g) In an equilibrium mixture the partial pressures of SO2 and O2 are 0.165 atm and 0.755 atm, respectively.
a 350 ml gas piston is filled with .250 moles of gas at standard temperature and pressure. the pistonpushed into the
A patient needs to take 375 mg of ibuprofen twice daily. The pills in the bottle are each 250. rm mg. How many pills does the patient need to take each time she wants the 375 mg dosage? Assume that these pills are scored and can be cut in half if ..
the radioactive isotope 247 bk undergoes a series of alpha-particleand beta particle productons taking bk-247 through
Which of the following correctly summarizes the exact relationships between the SN values of 2 to 6, the hybrid orbital names, and the predicted geometries for molecules that have hybridized central atoms?
A 0.5220g sample of an unknown monoprotic acid was titrated with 9.96*10^-2 M NaOH. The equivalence point of the titration occurs at 23.84mL.
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