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Mendeleev is considered the father of the periodic table. He was so advanced that he left space for elements not discovered. Explain Mendeleev's logic in leaving blank spaces then describe how the modern periodic table came to be. (YOUR ANSWER MUST BE COMPLETE AND THOROUGH FOR FULL CREDIT)
Sometimes as a solute dissolves in a solvent, the solute molecules dissociate to some extent; sometimes solute molecules associate to form larger molecular units, such as dimers and trimers
If you use a liter ( 1000mL) bottle of oil in your engine, how much heat is produced in kcal? In BTU? The density of motor oil is .82g/mL
A 100mL portion of 0.300 M acetic acid is being titrated with 0.200 M NaOH solution. Explain what is the [H+] of the solution after 50.0mL of the NaOH solution has been added? Assume the ionization constant of acetic acid is 1.8×10-5.
The molar energy of vacancy formation for silver (Ag), ?Hv, is 84 kJ/mol. Given this information, determine for Ag the vacancy density (number of vacancies/cm3) at 1103 K. Assume the pre-exponential factor is one.
Calculate pFe2 at each of the following points in the titration of 25.00 mL of 0.02138 M Fe2 by 0.03645 M EDTA at a 7.00 pH: a) 11.00 ml pFe2+ =? b) the equivalence point Ve pFe2+=? c) 20.00 ml pFe2+=
consider the location of the amino acid side chains and types of repeating interactions in both an alpha helices and
Which statement about the hybridized oxygen molecule in water(sp3 hybridized oxygen) is not correct. The electrons remain in their assigned orbitals. The overall energy of the sp3 orbitals is exactly the same as the energy for the original orbital..
a how many hydrogen bonds can each water molecule participate in?illustrate your answer by drawing as many water
1.what is a plasmon?2.what metals give rise to the best plasmons? why3.why are plasmonic better than electronics for
The reaction is found to be first order each in iodide and hypochlorite ions, and inversely proportional to the concentration of hydroxide ion present in the solution.
Question- An aspirin tablet weighing 0.445 g is dissolved in 28.1mL of water. The concentration of the aspirin in the solution is found to be 0.056 M. Calculate the % aspirin in the aspirin tablet.
is alpha-pinene superimposable on its mirror image? moleculesthat are not superimposable on their miror images rotate
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