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An electron in a hydrogen atom makes a transition from n= 2 to n= 6 which involves a photon of light. Is the photon absorbed or emitted by the hydrogen atom? Explain what is the wavelength of the photon?
Draw a Lewis structure for each of the following compounds. specify the hybrid orbitals that overlap to form each bond. then label each bond as sigma or pi bond. also, draw all non-bonding hybrid orbitals.
What is the percent ionization of a 0.186 M solution of this acid? A certain weak base has a Kb of 7.50 × 10-7. What concentration of this base will produce a pH of 10.06?
calculate the number of calories required of heat energy required for warming 39.8 grams of water from 19.9 degrees Celcius to 30 degrees Celcius.
what is the pH of a solution formed by combining 200.0 mL of 0.16 M HCL with 300.0 mL of 0.091 M NaOH at 25 degrees celcius
What is the partial pressure of oxygen gas in an oxygen and neon gas mixture at 1.280 atm. The gas mixture contains 15.00 g of oxygen and 15.00 g of neon
calculate the pressure exerted by ar for a molar volume of 1.42l mol-1 at 300.0 k using the van der waals equation of
Assuming that its molar heat of vaporization is constant at 28.4 kJ/mol, the boiling point of C2H5NH2 when the external pressure is 0.709 atm is K.
alkaline earth metal hydroxide to be used as a strong base or good source of hydroxide ion in aqueous solution for practical operation, which one would you use? Please explain why.
Compound on TLC can be roughly distinguished into their classes based on the characteristics produced after they are modified by spraying reagent such as iodine vapour. What group of compound can be identified using iodine
a flask contains 30mL of 0.16 M phosphate buffer that has a pH of 7.1. what volume of 0.06M NaOH should be added to increase
Draw the skeletal structure of all the tripeptides you can make combining one of each of these amino acids. Show your products in the unionized state and omit any stereochemistry.
When the following chemical equation is correctly balanced, what is the sum of the smallest set of integer coefficients
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