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Write the chemical equation for the equilibrium that corresponds to Ka. By using the value of Ka, calculate ?G° for the dissociation of cyanic acid in aqueous solution
Write a balanced chemical equation for the reaction: Na2CO3 and AgNO3? And Its ionic equation please
The Solubility of Silver Bromide at 100 Celsius degrees is 0.00037 grams for 100 grams of water. Calculate Ksp for Silver Bromide at this Temperature.
Cheap soaps sometimes leave skin feeling/looking dry, and in some cases, raw and blistered. What might cause this effect
Using standard free energy of formation values given below, calculate the equilibrium constant K_p of the reaction
The energy of a vibrating molecule is quantized much like the energy of an electron in the hydrogen atom. The energy levels of a vibrating molecule are given by the equation
Find the velocity of an electron emitted by a metal whose threshold frequency is 2.32×1014 when it is exposed to visible light of wavelength 5.10×10?7
If the water in a well has 1000.0 mg/L of CaCO3 dissolved in it, How many grams of Na2C2O4 could you mix with 100.0 mL of that water before a precipitate would form
PET has a permeability to carbon dioxide of 0.227x10^-13(cm^3 x cm)/(cm^2 x s x Pa) at 25 C. Given that the activation energy for permeability is 27 kJ/mole, at what temperature would the permeabili
Carbon dioxide dissolves in water to form carbonic acid. Estimate the thermodynamic equilibrium constanst (K) for this reaction (delta Gf values: H2CO3= - 616.1, H2O= - 237.1, CO2= - 394.4) .
Write the mathematical expression for the equilibrium constant, Keq, as a function of the concentrations of the products and reactants for this reaction.
A student allowed several air bubbles to enter his eudiometer tube. He ignored the error and proceeded with the experiment. What effect will this error have on his final result? Explain your rationa
Explain why it is necessary to cinsider water vapor pressure in calculating the atomic mass of an unknown metal. Whould the calculated atomac mass be larger or smaller thatn the true value if water
A weak monoprotic acid is titrated with NaOH and the following data is recorded. Calculate the molar mass of the weak acid.
What will the pH of the equivalence point be when 10.00 mL of .0200M Carbonic acid is fully titrated to the 2nd end point using .05 M NaOH?
If the water in your well has 1000.0 mg/L of calcium carbonate dissolved in it, How many grams of sodium oxalate could you mix with 100.0 mL of that water before a precipitate would form
Weigh 3.503g of NaC2H3O2*3H2O and add it into a 150mL beaker. Pour in 8.8 mL of 3M acetic acid. Pour in 55.6 mL of distilled water and add it to the mixture and stir the solution.
calculate the molar mass of the acid. B. After 10.00 mL of base had been added during the titration, the pH was found to be 5.87. What is the Ka of the unknown acid
what are the various parameters that can be changed performing MASCOT. how could them affects probability score, any one know about this
A buffer is prepared with 0.0400 moles of an acid (Ka=1.5x10^-4) and .025 moles of base and 400 mL water. Calculate the pH.
A solution of a weak acid was tested with the indicators used in this experiment. The colors observed were as follows
Write a net ionic equation to explain why the pH didn't go up to about 10, as it would have if that amount of NaOH were added to distilled water or to 20mL 0.00040 M HCl, which also would have a pH
a solution of sodium cyanide (NaCN) has a pH of 12.10. How many grams of NaCN are in 425 mL of solution with the same pH
A buffer is prepared by adding 11.0 g of ammonium chloride to 250 ml of 1.00 M solution...What is the pH of this buffer
reaction vessel initially contains 153 torr of water at 700.0 {\rm K} in contact with excess solid carbon, find the percent by mass of hydrogen gas of the gaseous reaction mixture at equilibrium.