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A certain reaction with an activation energy of 185 kJ/mol was run at 485K and again at 505K. What is the ratio of f at the higher temperature to f at the lower temperature?
Pick the words that correctly finishes the following sentence. A reaction will always be spontaneous if it is and there is an increase in disorder
When a glow stick is placed in a freezer, its chemiluminescence lasts a significant time longer. How might this come about?
Constant-boiling HCl can be used as a primary standard for acid-base titrations. A 50.00 mL sample of constant-boiling HCl with a concentration of 0.1193 M was collected and titrated to an end point with 34.89 mL of Ba(OH)2 solution. What is the m..
The partial pressures of PCL5, PCl3, and Cl2 are .875 atm, .463 atm, and 1.98 atm. What is the value of equilibrium constant?
What is the pH of a 0.16M solution of a lactic acid. HC3H5O3
A piece of solid Ni metal is put into an aqueous solution of HNO3. Write the net ionic equation for any single-replacement redox reaction. Include states and charges
what ion is the base in this reaction. What is the acid? What is the spectator ion in this rxn? Please be detailed and and show the states
What velocity would an electron (9.11x10^-31kg ) need for its de Broglie wavelength to be that of red light (745 nm)?
If 0.25 mol of Br2 and .55 mol of Cl2 are introduced to a 3.0 L container at 400K, what will be the equilibrium concentration of Br2?
Calculate the molarity, percent composition by weight, and mole fraction of HCL in an aqueous solution 12 M HCl that has a density of 1.20 g/mL.
"Given the following standard reduction potentials, E°redAl3+/Al = -1.66 V. E°redCr3+/Cr = -0.74 V.
What is the mass (in g) of a cube of aluminum (density = 2.702 g/mL) with an edge length of 0.27 feet
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