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The Heisenberg uncertainty principle as well holds for energy and time, two complimentary variables. Explain how well can we know the energy of molecular excited states with lifetimes of a)10 micro seconds; b)10 ns and c)10 ps.
metallic aluminum reacts with mno2 at elevated temperatures to form manganese metal and aluminum oxide. a mixture of
Calculate the conditional formation constant Kf' for the formation of an EDTA complex with copper(II) at a pH of 5.00, if log Kf = 18.80. Show Work.
Find delta E, delta H, q, and w for the change in state of 1.0 mol H2O(l) at 84 degree C to H2O(g) at 109 degree C. The heat capacity of H2O(l)= 75.3 J/molK, heat capacity of H2O(g)= 25.0 J/molK, and the heat of vaporization of H2O is 40700 J/mol ..
Silver consists of two major isotopes with the following percent abundances and atomic masses: 107Ag (51.84% and 106.90509 amu) and 109Ag (48.16% and 108.90476 amu). Calculate the average atomic mass of silver to five significant digits.
saturated water vapor at 200c is isothermally condensed to a saturated liquid in a piston-cylinder device. calculate
The number of molecules in 16.0 grams of methane, CH4, is the same as that in how many grams of water. If 20.0 of fe2(SO4)3 is mixed with 20.0g of Ba(OH)2, the limiting reactant is Fe2(SO4)3+ 3Ba(OH)2-3 BaSO4+2Fe(OH)3
100.0 ml of 0.100 M acetic acid is placed in a flask and is titrated with 0.100 M sodium hydroxide . An appropriate indicator is used. Ka for acetic acid is 1.7 x 10 -5. Calculate the pH in the flask when no NaOH has been added.
A 12.5% by mass solution of sodium chloride (NaCl) in water has a density of 1.115 g/mL at 20 degrees C. What is the molarity of this solution
if 4.00 grams of water at an initial temperature of 1.00 degrees c absorbs 33.00 joules of heat by how many degrees c
What proportions of ethanol and water should be mixed in order to produce 100 cm3 of a mixture containing 50 percent by mass of ethanol.
Elemental exonium (not a real element) consists of 2 major isotopes Abundance Mass 31% 95 amu,69%. 118 amu What is the atomic weight for exonium.
Why does the positive potential superimposed with an AC current allow high mass particles to pass through the quadrupole
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