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What 2 requirements must be met in order for a molecule to be polar? Note the difference between molecules and bonds.
The work function for mercury is equivalent to 435 kj/mol photons. When light of 205nm strikes a mercury surface,the kinetic energy is 2.47x10^-19 J/photon. What is the velocity of the ejected electrons in m/s?
a 37.4-l volume of methane gas is heated from 22 degrees c to 78 degrees c at constant pressure. what is the final
The following compounds undergo McLafferty rearrangement in the mass spectrometer. Predict the masses of the resulting charged fragments for each of the following compound.
Mixtures of ethanal and water do not behave Raoult' s law. Describe the deviation from Raoult' s law in words and with a graph.
A reversible adiabatic expansion of NO2 (g) from an initial V=20dm^3 and an initial T=300K to a final P=1bar. Find Vf, Tf, and the change in entropy for both the system and surroundings.
compare the properties of elements and compounds. give two examples of each including one example that exists in the
calculate the value of kc for the following reaction at 700 c. analysis atnbspequilibrium showed that there are 2.50
If 2 new elements have been discovered and one is R, a new element from the family with 3 valence electrons and Z, a new element from the family with 6 valence electrons. Write the formula for the binary compound between element R and element Z.
If an analytical method has been developed and the retention time for a particular anabolic steroid has been determined, how might you use this method to determine the possibility of the use of anabolic steroids by an athlete.
What is the partial pressure of each substance if the total pressure of the mixture is 2.35 atm?
reacts completely with a volume of F2(g) to produce 2.0 L of ClF5. what volume of F2(g) reacted completely?
a sample of nitrogen gas is contained in a pistol with a freely moving cylinder. at 0.0 c the volume of the gas is 375
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