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A particular first-order reaction has a rate constant of 1.35x102 at 20 degrees C. Explain what is the magnitude of k at 75 degrees C if Ea =85.6Kj/mol?
21 g of each Li (molar mass=7 g/mol) and N2 (molar mass=28 g/mol) are placed in a reaction vessel. What is the maximum mass of Li3N (molar mass=35) that can be produced
Which of the following statements regarding the Bohr model of the hydrogen atom is incorrect?
The formation of a white solid id often observed after alpha-phenylethylamine comes into contact with carbon dioxide in the atmosphere. What is that white compound? Give an equation that shows its formation.
If 400. mL of NO at STP is reacted with 500. mL of O2 at STP, calculate the partial presure of NO2 after the reaction goes to completion. Assume constant volume.
contains air at a pressure of 171 kPa and a temperature of 293 K. How many moles of air are in it? Also, how many molecules of air does it contain?
discuss the purpose of continuously heating and then cooling the material in the process of polymerase chain
When 5.0 g of CaCl2 was dissolved in 50ml of water in a coffee cup calorimeter, the temperature of the solution rose from 22.3 C to 30.5 C. What is the q solution in Joules and what is the q rxn in Joules?
silver iodide agl is less soluble in aqueous ammonia than either agbr or agcl. what two factors could contribute to
How the concentration on Cl- was calculated from a solution of 0.0167M CdCl2. It gives the value [Cl-]=0.0334
Use the reactions below and their equilibrium constants to predict the equilibrium constant for the reaction, 2A(s) 3D(g).
standard-state free energy of formation data to calculate the acid-dissociation equilibrium constant
A hypothetical atom has four allowed energy levels. As shown in the accompanying diagram, the emission spectrum of this atom will contain six transitions, labelled A - F.
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