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The choice of precipitating reagent is important. Briefly explain what the consequences would be if excess 6M NaOH solution instead of 6M NH3 solution were used to separate Fe3+ and Al3+ ions from Ca2+, Cu2+, and K+ ions at pH 9-10. Include appropriate equations to support your conclusion.
An aqueous solution of KNO3 has a molal concentration of 1.099 mol kg-1. Its density is 1.0630 g mL-1. Calculate the molar concentration of KNO3.
Give the structure that corresponds to the following molecular formula and 1H NMR spectrum
Predict the products of the reaction between each of the following compounds and both chromic acid and PCC. a) 2-methyl-2-butanol
If aluminum is diffused into a thick slice of silicon with no previous aluminum in it at a temperature of 1100?C for 8 hours, what is the depth below the surface at which the concentration is 1016 atoms/cm3
Show the stereochemistry of the product(s) you would expect when (2S,3S)-2,3-epoxypentane undergoes acid-catalyzed hydrolysis. If more than one cleavage product is possible, draw them all. Use wedge and dash tools to indicate stereochemistry.
When solutions of the compound copper (ii) chloride and zinc nitrate are mixed, does the reaction result to form a precipitate, water, gas, or is there no reaction at all.
Sodium azide (NaN3) is sometimes added to water to kill bacteria. Calculate the concentration of all species in a 0.010 M solution of NaN3. The Ka value for hydrazoic acid (HN3) is 1.9 * 10-5.
If a 0.0157 M solution of a certain analyte exhibits 47.5% T at a wavelength of 280 nm, what will the percent transmittance be for a 0.0279 M solution of the same analyte? Assume the pathlengths for each measurement are equal.
Titanium is a strong, lightweight, corrosion-resistant metal that is used in rockets, jet engines, and bicycle grams. It is prepared by the reaction of titanium (IV) chloride with molten magnesium between 950 and 1150 degrees C via the following r..
If it takes 4.67 times as long for a particular gas to effuse as it takes hydrogen under the same conditions, what is the molecular mass of the gas?
Calculate Heat Quantity of Heat Energy in Kilojoules required to melt 0.0980 mol ice to liquid water at 0 Degrees Ceslsius
Calculate the molar solubility of AgBr in 4.0 M NH3. Kf for Ag(NH3)2 is 1.7 x 10^7 and Ksp for AgBr is 5.0x10^-13 5. What is the pH at the equivilaence point when 45 mL of 0.125 M acetic aced is titrated with 0.225 M NaOH? Ka for acetic acid is 1.7..
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