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Compute the frequency of light emitted when an electron in hydrogen atom goes from the n = 5 shell to the n = 2 shell.1) 6.9 x 1014 s-1 2.) 8.2 x 1013 s-12) 7.8 x 1014 s-1 4.) 1.2 x 1014 s-1
How many grams of commercial acetic acid (97% by mass) must be allowed to react with an excess of to produce 83 of acetyl chloride , if the reaction has a 81.2 yield?
The blood buffering system is aided by the enzyme carbonic anhydrase, which interconverts carbon dioxide and water to bicarbonate and H
The dream finally became reality when it was shown that mercury-198 can be converted into gold-198 on bombardment by neutrons. A. What small particle is produced in addition to gold-198? B. Write a balanced nuclear equation for the reaction.
if 72g of NaCl is dissolved in enough water to make 500ml of solution, what will be the molarity of the solution.
B: A 75.0 mL colume of 0.200 M NH3 (Kb=1.8x10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 27.0mL of HNO3.
How many mL of 0.0221 M KMnO4 would it take to titrate a 0.5255 g sample of K3Fe(Ox)3? How could the results of your titration be used to determine if the sample was actually a mixture of K3Fe(Ox)3 and K4Fe(Ox)3
At 25 °C and 775 Torr, carbon dioxide has a solubility of 0.0347 M in water. What is its solubility at 25 °C and 1370 Torr
In an organic chemistry lab, why would you not simply oxidize p-toluidine with KMnO4 to make p-aminobenzoic acid if it would be a faster method than using multi-step organic synthesis
What ions and/or molecules are present in relatively large proportions in a solution of a weak acid HCN (aq)
which of the following substances is least likely to dissolve in or be miscible with water? acf4 bch3ch2-oh cch3-nh2
what would be two examples of reductive alkylation of N-methylbenzylamine and formaldehyde
an object weighing 335 n in air is immersed in water after being tied to a string connected to a balance. the scale now
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