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A solution containing 0.02 m Ba (NO3)2 and 0.04 m PB (NO3)2 is slowly joining Na2 SO4. PB for SO4 = 1.6 x 10 -8 BA for SO4 = 1.0 x 10-10, and since the volume of the participating solid is omitted, what substance collapses first?
based on mole ratios. a sample is 59.53 c 5.38h 10.68n and 24.40o what is its empirical formula. a 0.2000 gram sample
What pH is needed to increase the solubility of Mn(OH)2 to 2.5 x 10-3M? Ksp for Mn(OH)2 = 1.6 x 10-13.
It is known that three complex ions of chromium (III) were commonly used in that lab: [Cr(H20)6]3+, [Cr(NH3)6]3+, and [Cr(H20)4Cl2]+. Determine the likely identity of each of the solutions.
An antacid tablet containing calcium carbonate as an active ingredient required 26.8mL of .112 M HCL for complete neutralization. What mass of CaCO3 did the tablet contain?
Calculate the hydronium ion concentration and the pH of the solution that results when 20.0 mL of 0.15M acetic acid, is mixed with 5.0mL of 0.17M sodium hydroxide.
What might one do to verify that the global strain energy minimum has been identified for a compound. Why is the energy difference for t-butylcyclohexane significantly greater than the corresponding value calculated for methylcyclohexane
A student analyzed a 0.2078g sample containing aspirin using 0.1014M NaOH. The student obtained a % purity of 76.1%. Calculate the volume of NaOH that is required in order to reach the end point of the reaction. Molar mass for aspirin = 180.16g/m..
A 0.2365 g portion of this metal is dissolved in nitric acid and the silver ions precipitated with excess NaCl. After filtering and drying the mass of the precipitate is found to be 0.2865g. 1) What is the purity of the original metal
Explain how can you distinguish between the pairs of the following isomers using spectroscopic methods (IR or NMR)
A constant current of 119.0 A is passed through an electrolytic cell having an impure copper anode, a pure copper cathode, and an aqueous CuSO4 electrolyte.
A 10.0 long cylindrical glass tube, sealed at one end, is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 11.90 . The density of ethanol is 0.789 . what is the inner diameter of cylinder?
In the transition metals (the d-block), the electron configuration of cations is different than what you might expect. Instead of the d electrons being lost first, s electrons are lost first.
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