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You need to make 0.075 L of a sulfuric acid solution that has a concentration of 3.50 M. If you are going to use 12.0 M as your stock solution to make the dilution, how much of the stock solution should you use?
A. 560. mL
B. 257 mL
C. 21.9 mL
D. 0.560 mL
M+ is added to a solution of 0.0035 M X- and 0.0016 M Z-. MX has Ksp = 8.2 × 10^-9, while MZ has Ksp = 1.7 × 10^-10. What percentage of the Z- is still in solution (not precipitated) when the MX just starts to precipitate? Answer in units of %.
Calculate the number of moles of Ca(NO3)2 originally present
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the recrystallization is slow typically the flask is closed with a cork. What do you think is the reason for using a cork and not a plastic stopper (which would seal the flask better)
A 49.38 gram sample of a hydrate of BaI2 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 45.22 grams of the anhydrous compound remained. What is the formula of the hydrate
A sample of pure NO2 is heated to 388C at which temperature it partially dissociates according to the equation.
Sulfur trioxide is used in the industrial production of sulfuric acid. The industrial and natural conversion of sulfur dioxide to sulfur trioxide can be represented by the following reaction
Assuming such a situation, explain the problems that would result from the use of the equations in their present form. What modifications would you make to give accurate results when using such an unknown
The overall Kf for complex ion Ag(NH3_x+ is 1.7 x 10^7. The Ksp for AgI is 1.5 x 10^-16. What is the molar solubilitiy of AgI in a solution that is 2.0 M in NH3?
From the values of ?H and ?S, predict which of the following reactions would be spontaneous at 25 degrees celsius. Reaction A: ?H = 10.5 kj/mol, ?S = 30.0 J/K*mol Reaction B: ?H = 1.8 kj/mol, ?S = -113 J/K*mol
A phosphate buffer solution contains 0.08 M K2HPO4 and 0.12 M KH2PO4. PKa values for H3PO4 are 2, 6.8, and 12.2. Compute the concentrations of
Problem- Looking in Appendix E, suggest what metal the underground pipes could be made from in order for magnesium to be successful as a sacrificial anode.
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