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Explain what is the pH of a solution prepared by adding 15ml of .10M acetic acid ka=1.8X10-5 and 10ml of .10M sodium acetate? Explain what is the pH after the addition of 1mL of .10M NaOH to 15ml of the solution above?
Using data from the Appendix, calculate the temperature where Keq = 1.00. You may assume that deltaH0 and deltaS0 are independent of temperature.
Calculate the mass of TRIS to use when it is mixed with 100 mL of 0.50 M HCl to prepare 1.00 L of buffer of pH=7.40. Also calculate the total concentration of the buffer.
1) CaF2 at room temperature has a solubility of 0.00160 g of CaF2 per 100g of water. How many moles ofCaF2 are there? 2) If presuming a solution of CaF2 is saturated and has a density of 1.00g/ml; explain how many moles will dissolve in 1.00L of so..
A solution is made by dissolving 0.679 mol of nonelectrolyte solute in 871 g of benzene. Calculate the freezing point and boiling point of the solution.
If the densities of 20%, 50% and 70% solutions are 0.69 and 0.58 and 0.49 g/mL, respectively, and the denisty of the unknown solution is 0.50 g/mL, what is the approximate concentration of the unknown solution.
Calculate the amount of heat required to heat a 3.6 kg gold bar from 25 C to 64 C. Specific heat capacity of gold is 0.128 j/g C.
a cetrain pitchers fastballs have been clocked at 104 mph. calculate the wavelength of a .141-kg baseballin nm
Assume that a solid has a constant of Cp,m=25 J/K-mol from 50K to 298K and that the DeBye approximation is valid from 0K to 50K. Estimate the standard molar entropy Sm for the solid at 298K.
Ammonia gas is produced by reacting hydrogen gas with nitrogen gas. To produce 50.0 g of ammonia gas using air as your source of nitrogen gas, what volume of air is required if the air is introduced at 29°C and 745 mmHg
If the mass of helium-3 is 5.0064 x 10^-24 grams and the mass of a deuteron is 3.34370 x 10^-24 grams. Calculate the energy released by this reaction using Einstein's equation.
Predict what would appear in the solution if NAOH has been added to the CuSO4 solution instead of the NH3.
1 what is the molarity of a kfaq solution containing 116g of kf in 1.00 l of solution?2 what is the molarity of an
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