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1. How many moles of BaCl2 are formed in the neutralization of 196.5 mL of 0.095 M Ba(OH)2 with aqueous HCl?
2. Lead ions an be precipitated from aqueous solutions by the addition of aqueous iodide: Pb+2(aq) + 2I-2 (aq) =PbI2(s) . Lead iodideis virtually insoluble in water so that the reaction appears to go to completion. How many milliliters of 1.180 M HI(aq) must be added to a solution containing 0.200 mol of Pb(NO3)2 (aq) to completely precipitate the lead?
3. What is the molarityof a NaOH solution if 15.5 mL of a 0.220 M H2SO4 solution is required to neutralize a 25.0 mL sample of the NaOH solution?
4. Aqueous solutions of a compound did not form precipitates with Cl-, Br-, I-, SO4-2, CO3-2, PO4-3, OH-, or S-2. This highly water soluble compound produced the foul-smelling gas H2S when the solution was acidified. This compound is _______.
A Chemistry experiment requires 25.2g of silver nitrate, how many grams of a 15.5% by mass solution of silver nitrate should be used
what are the intermolecular forces between hexane and cinnamic acid and how does this explaine why heane does not dissolve cinnamic acid
What is the concentration (in mg/L) of dissolved O2 in blood (or water) at this partial pressure and a normal body temp of 37 C? The solubility of O2 in water at 37 C and 1 atm partial pressure is 1.93 x 10^-3 mol/L.
What is the osmotic pressure developed at 17 oC by an aqueous solution that is 0.111 M in AlCl3
How many theoretical plates does the column have What is the plate height (in mm) of the column if the column is 11.7 cm long
What is the molarity of the resulting solution when 20.0 mL of a 2.00 M aqueous solution is diluted by the addition of 30.0 mL of water
When 0.450kJ of heat is added to the gas, it expands and does 219J of work on the surroundings. What is the value of \Delta H for this process? Answer in units of kJ
Barium sulfate, BaSO4, is used in medical imaging of the GI tract because it is opaque to X rays. A barium sulfate solution, sometimes called a cocktail, is ingested by the patient
The color of most coordination compounds can be explained by the energy difference between the two sets of d orbitals in a complex.
Problem- 1) Calculate the resolution for a 1115.5 keV Zn peak that has a FWHM of 2.01 keV. 2) Calculate the resolution for a 1115.5 keV Zn peak that has a FWHM of 200 keV.
system and show how the pH will change upon addition of 10.0 mL each of ) 0.10 M of HCl or NaOH. Use any combination of weak acid and its salt OR weak base or its salt.
A buffer is prepared by mixing 500 mL of 1.50 M Ch3COOH with 250 mL of 1.00 M CH3COONa. What is the pH of the buffer system after the formation of 0.15 moles of OH- from a secondary reaction with the buffer. (Ka for acetic acid = 1.7 x 10^-5)
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