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A UV Photon wavelength = 58.4 nm from a helium gas discharge tube is absorbed by a hydrogen molecule which is at rest. Since momentum is conserved, define what is the velocity of the hydrogen molecule after absorbing a photon? Explain what is the translational energy of the on mole of hydrogen molecules?
3 Physical Chemistry Questions
For which of the following changes is it not clear whether the volume of a particular sample of an idea gas will increase or decrease
Density is mass per unit volume, commonly the amount of matter in one cubic centimetre of the material. What two properties of particles affect the density of the material they compose
A solution is 0.0100 M in Pb2+ ions. If 0.103 mol of solid Na2SO4 is added to 1.00L of this solution (with negligible volume change), what percent of the Pb2+ ions remain in solution.
Identify the Qual I cation(s) that is(are) confirmed present in a reference solution by: the formation of a precipitate. the color of a soluble complex ion. the characteristic color of a flame test
0.0010 mg of H, 0.0116 mg of C, and 0.0310 mg of O. It was also determined that the unknown compound had a molecular weight of 90.0 g/mol.
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 505 cm3 at 20.0 degrees Celsius and 9.95 times ten to the fourth Pa. What is the volume of the air at STP that an individual bre..
In order for a nuclear reaction to be supercritical with fissile nuclei, what must be true of the multiplication factor
a compound is found to be 30.45n and 69.55 o by mass. if 1.63g of this compound occupy 389ml at 0.00 celsius and 775 mm
Calculate the oxidation number of the chlorine in perchloric acid, HClO4.
Chlorine has two isotopes, Cl-35 and Cl-37. Their abundances are 75.53% and 24.47%, respectively. Assume that the only hydrogen isotope present is H-1.
A 3.664 g sample of a monoprotic acid was dissolved in water. It took 20.27 mL of a 0.1578 M sodium hydroxide solution to neutralize the acid. Calculate the molar mass of the acid.
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