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A reaction has a rate constant of 1.19×10-2 at 400. and 0.69 at 450.
A) Determine the activation barrier for the reaction.B) What is the value of the rate constant at 425 ?
Calculate the amount of energy released by the freezing of 13.3 g of a liquid substance, given that the substance has a molar mass of 82.9 g/mol and a molar heat of fusion of 4.60 kj/mol.
it is found that 1.431g of element x ciontains 7.509 *10^21 atoms. calculate the atomic mass of x
An existing power plant has been found to produce SO2 concentration of 20?g/m3 at a distance of 800m directly downwind from the stack when the wind is 4m/s from the north during a class C stability situation.
A voltaic cell consists of Ni/Ni2+ and Co/Co2+ half-cells containing equal volumes of solutions with the following initial concentrations: [Ni2+] = 0.80 M; [Co2+] = 0.20 M.
If 21 mL of 6.0 M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
Determine the numbers of moles of S8 that are required to make 0.600 moles of SF4.
how many grams of glucose must be dissolved in 563 greams of ethanol to prepoare a 2.40 x 10 -2 m solution?
Deficiency of phosphoglyceromutase d) mutation that interferes with the formation of quarternary structure in hemoglobin
If 76.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
Krypton crystallizes as a fcc (face centered cubic unit cell) having an edge length of 559 pm. What is the density of solid Krypton?
How many grams of Na3PO4 will be needed to produce 400ml of a solution that has a concentration of Na+ ions of 0.900 ?
At 25 ºC, the vapor pressure of water is 23.8 torr. What is the vapor pressure of a solution prepared by dissolving 97.0 g of C6H12O6 (a nonvolatile solute) in 170 g of water.
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