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Find out the amount number of mol of negative charge present in a sample of an ionic compound that contains 23.1 g of a 3- anion whose molar mass MM is 96.07 g/mol.
A by-product of the Witting-Rxn is triphenylphosphine oxide. At what step in the experimental procedure is this compound removed
Two types of electrochemical cells which are based on thermodynamic principles can be described. Which of the following statements about these cells is correct
Decide whether or not each of the following metals dissolves in 1 M . For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
How can a known value for KD for a pair of extracting solvents be used to estimate the efficiency of a liquid-liquid extraction
Why does it not make sense to think of sand as just being composed of a bunch of SiO2 molecules
What is the enthalpy of the reaction. Is this reaction exothermic or endothermic. Draw an enthalpy diagram for the reaction. Make sure to properly label axis, location of reactants and products
Calculate the percentage of He atoms at 100oC which have speeds in the range between 1200 m/s and 1300 m/s. Calculate the percentage of these He atoms that have speeds greater than 5000 m/s
What is the pH of a solution that is 0.75M in sodium acetate and 0.50M in acetic acid. (Ka for acetic acid is 1.85x10^-5)
Standard Electrode Potential (E), a) Write the equation for the cell reaction and indicate cathode and anode half-cells for the electrochemical cell formed from Mg/Mg2+ half-cell and In/In3+ half-cell.
A 82.2 g sample of dinitrogen monoxide is confined in a 3.2 L vessel. What is the pressure (in atm) at 115°C?
How much heat energy is needed to raise the temperature of 2.01 Kg of this oil from 23 C to 191 C?
a sample of He gas has a volume of 900 mL and a pressure 2.50 atm at 298 K. What is the new pressure when the temperature is changed to 336 K and the volume is decreased to 450 mL?
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