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Research methods and which one would work best in an organization and determine how to use data effectively
A piece of a newly synthesized material of mass 25.0 g at 80.0C is placed in a calorimeter containing 100.0 g of water at 20.0C. If the final temperature of the system is 24 0C
What concentration of the barium ion, Ba^2+, must be exceeded to precipitate BaF2 from a solution that is 1.00*10^-2 M in the fluoride ion, F^- ? Ksp for barium fluoride is 2.45×10^-5.
Problem- How much heat (in kJ) is evolved (under standard conditions) when 83.84 g of copper reacts to form copper(II) oxide
Suppose that a certain molecule composed of only carbon and hydrogen has a straight chain backbone five carbons long and and contains double or triple bonds. What is minimum number of hydrogen atoms that the molecules must have.
the reaction of potassium in water is extremely exothermic, what would be the problem with adding a large piece of potassium to a small amount of water?
what is my percent yield of titanium ii oxide if i start with 20 grams of titanium ii sulfide and actual yeild of
A 50.0mL aliquot of 0.0500 M NaCN is titrated with 0.100 M HCl. Explain what is the pH when 10.00mL of titrant have been added. A. 9.38 B. 9.03 C. 5.10 D. 8.90 E. 9.21
Isopropyl alcohol "rubbing alcohol" has a vapor pressure of 10.0 mm Hg at 2.4 degrees Celsius and 100 mm Hg at 39.5 degrees Celsius. Calculate
kininogen which is a lysine-rich protein . Like HRGP , it is able to bind to glycosaminoglycans and antimicrobial, but this binding is far less sensitive to small fluctuations id physiological pH. Q1 , Why does kininogen bind to glycosaminoglycans e..
Define what value do you estimate for Z {eff} experienced by the outermost electron in both {Na} and {K} by assuming core electrons contribute 1.00 also valence electrons contribute 0.00 to the screening constant?
Assume that the coffee has the same density, 0.997g/mL , and specific heat capacity, 4.184\rm J/(g\cdot K) , as water over this temperature range.
If an ion having 4+ charge and a mass of 49.9amu has 2 electrons with principle quantum number n=1, 8 electrons with n=2, and 10 electrons with n=3. Provide nas many of the properties for the ion as possible from the information given.
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