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Problem- What is the maximum amount of 25 mM NaOH solution that can be made using all 500 mL solution with 20g of NaCl in it?
Illustrate structures to prove your rezoning.
Which of the following combinations would be the best to buffer an aqueous solution at a pH of 5.0? H3PO4 and H2PO4- (Ka=7.5e-3) HNO2 and NO2 (Ka=(4.5e-4) CH3CO2H and CH3COO (Ka= 1.8e-5) H2PO4 and HPO4 (Ka=6.2e-8)
The temperature at which a substance melts or boils depends upon the strengths of the intermolecular forces. What must happen for a substance to melt in terms of particles, intermolecular forces, and energy
By what factor does the reaction rate increase at 25oC when the catalyst is used. Assume that the Arrhenius pre-exponential factor, A, is the same for the catalyzed and uncatalyzed reactions.
Calculate the percentage ionization of nitrous acid in a solution that is 0.222 M in nitrous acid (HNO2) and 0.278 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 E -4. which E is an exponential of 10.
calculate Change in A and change in G for the vaporization of 1.00 mol of liquid H2O at 1.00atm and 100 degrees Celsius. For the gas phase consider an ideal behavior. Write a comment on both change in A and change in G.
Compute the molar mass of beta carotene if 10.0ml of a solution containing 7.68mg of beta carotene has an osmotic pressure of 26.57mmHg at 25.0C.
Determine the pH of each solution a solution that is 0.028 M in HClO4 and 0.030 M in HCl a solution that is 1.06% HCl by mass
The enthalpy change for the combustion of monoclinic sulfur to CO2 is -9.376 kJ/g. Under the same conditions, the combustion of rhombic sulfur to CO2 is -9.293 kJ/g.
While a piece of metal is irradiated with UV radiation, electrons are ejected with a kinetic energy of 5.96 x 10-19 J. Explain what is the work function of the metal
What is the pressure in millimeters of mercury of 0.0110 mol of helium gas with a volume of 208 mL at a temperature of 35 degrees C?
suppose 7.70g of methane is mixed with 54.7g of oxygen . Calculate the maximum mass of water that could be produced by the chemical reaction
Use the tabulated half-cell potentials below to calculate the equilibrium constant (K) for the following balanced redox reaction at 25°C.
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