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How many electrons should we expect to see associated with the lowest energy peak in the photolectron spectrum of the element Gallium (Ga)?
If a protein sample has a molar mass of approximately 14,000 u, what is the expected freezing point depression when 1.00g is dissolved in 50.0mL of distilled water
a) The reaction will shift toward products with no change in K. b) The reaction will shift toward products with a decrease in K. c) The reaction will shift toward products with an increase in K. d) The reaction will not shift and the value of K wi..
Use Excel or your favorite spreadsheet program to generate the concentration profiles. You may either estimate the stability parameters using the attached plots or (better) use the attached parameterized forms.
Calculate the weight percent composition of the mixture, using the same assumptions as in part A.
A hypothetical reaction X + 2Y ® Products is found to be first order in X and second order in Y. What are the units of k, the specific rate constant, if reaction rate is expressed in units of moles per liter per second? A) M•s-1 B) M-2•s-1 C) M-3•..
Is the system consisting of the aluminum and the water a closed system? Explain your reasoning. If not, how much energy was lost or gained by the system during the experiment
An enzyme reduces the activation energy of a reaction at the temperature of 25 degree celsius from 55 kjmol-1 to 15kJ mol-1 by changing the route of the reaction.
For AuCl, Ksp = 2.0 x 10-13 at 25°C. What is the solubility of AuCl at this temperature?
An aqueous solution is 22.0% by mass silver nitrate, AgNO3, and has a density of 1.22 g/mL. What is the molarity of silver nitrate in the solution?
Fluorine-18, which has a half-life of 110 min, is used in PET scans. If 123 mg of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m.?
The compound MgSO4 is called Epsom salts. How many grams will you need to prepare a bath containing 5.80 moles of Epsom salts? Express your answer using three significant figures.
the temperature of a metal bar rises by 15 C when it absorbs 4.26 kJ of heat. The mass of the bar is 472g. Determine the specific heat of the metal bar.
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