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In the lab you make 10-5.5 M solutions of HCl and of NaOH using pure distilled deionized water. What would be the pH after the solutions equilibrate with the atmosphere
3 moles of carbon dioxide gas expands reversibly in a piston-container from 20 L to 40 L in an isothermal process at 400 K. Calculate work, heat, change in internal energy and change in enthalpy, considering van der Waals behaviour. [a = 3.59 atm ..
redox reaction NO2- is oxidized to NO3 and Ag is reduced to Ag. Complete and balance the equation for this reaction in basic solution
Starting from the left side of the periodic table, the melting and boiling points of the elements first increase, and then decrease
What is the volume of an object that has a mass of 3.4 g and a density of 2.4 g/mL? choose one below: 1.4 mL 0.71 mL 1400 mL 710 L 14 mL
what molecule would give the following mass spec data? m/z =15, 29, 43, 57 provide the dominate peaks in the spectrum. the m/z =57 (m-29) is the base peak. and the mz = 43 and 29 ions are also abundent.
Distinguishing between Organic Molecules, What chemical tests might be used to distinguish between: pentanal and 2-pentanone, between benzyl alcohol and diphenylmethanol?
Several oxidation reductions take place. List three examples of oxidation reduction reactions that are involved. Show what is oxidized what is reduced, and indicate which enzyme (E1, E2, E3) is involved.
Calculate the kinetic energy of an electron ejected by a photon with wavelength 1.91 x10^2 nm from a metal with a binding energy of
How are the following aspects of a reaction affected by the addition of a catalyst. 1) activation energy of the reverse reaction A) Increased B) Decreased
There is a peak in the middle of the graph with 0.40 for absorbance and 525 for wavelength. What is the wavelength of maximum absorbance?
The titration requires 34.11 mL of base to neutralize 15.00 mL of the acid. What is the Molarity if acid in the vinegar?
The rate law for a reaction is rate = k[A]^2 [B]. When the concentration of A and B are both 0.15M, the reaction rate is 0.115M/s. What would be the reaction rate when [A] = 0.30M and [B] = 0.45M
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