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Identify the conjugate acid-base pairs in each of the following equations and state whether the equilibrium mixture contains mostly products or mostly reactants.
a.) HNO2 +HS- <> H2S +NO2-
b.) Cl^- +H2O <>OH^- +HCl
What are some ways to induce recrystallization (Name 3), if your solute refuses to recrystallize after performing the required 7 steps? the seven-step recrystallization procedure
Problem- Briefly explain the Born-Oppenheimer approximation. Which terms of the Hamiltonian for a hydrogen molecule are affected by this approximation? Why is this approximation simplifying the quantum mechanical description of the hydrogen atom
Draw three resonance structures for the molecule OCS use these atom arrangement Indicate formal charges for each resonance structure and select the one that contributes the most to the description of this molecule
Decide whether or not a reaction will occur when a solution of Cadmium(II) Chloride is treated with nitric acid HNO3(aq). Write a balanced equation for any reaction that occurs.
Calculate the enthalpy change for the reaction in kJ/mol HCL. For this problem, assume that the calorimeter loses only a negligible quantity of heat, the total volume of the solution is 100 ml, the density of the solution is 1.0 g/ml, and its spec..
Explain what is the empirical formula of a compound containing 27.88% phosphorus and 72.15% sulfur. Find out the molecular formula if the molar mass is 444.6 g/mole.
A proton and electron separated by 100 pm generates a dipole moment of 4.80 D. If a diatomic molecule with a bond length of 128.0 pm has a measured dipole moment of 1.48 D, what is the percent ionic character of the bond
Concentrated hydrochloric acid solution contains 37.2 m/m% HCl. What mass of HCl is contained in 35.5g of concentrated HCl
cisplatin a compound used in cancer treatment is prepared by reaction of ammonia with potassium
at 700° C is 0.76 atm. Determine the initial pressure of carbon tetrachloride that will produce a total equilibrium pressure of 1.2 atm at 700° C.
Iincreasing the total pressure on the system by decreasing its volume, (c) adding gaseous I2 to the reaction mixture?
Using the values from Appendix C, calculate the value of change H degrees for each of the following reactions
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