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What is the molar solubility of lead chromate in 0.10 M HNO3 if the Ksp for PbCrO4 is 2.8 x 10^-13 and Ka2 for H2CrO4 is 3.0 x 10^-7? Note that H2CrO4 is considered to be a strong acid.
A 1.25g sample of copper ore was dissolved in acid and diluted to 250.0 mL. A 20.00 mL portion was diluted to 50.00 mL. The copper concentration of this solution was 4.62 ppm. What is the weight percentage of copper in the ore
A student measures k for a certain blue dye to be 24.16 M^-1 at 560 nm. What is the molarity of the dye in a solution with an absorbance of 0.118 at 560 nm
1.isobutene is formed by following radical polymerization process that follows chain transfer to monomer is the
If the molarity of stomach acid is 0.1 M (assumed to be HCl), how many grams of stomach acid will be "consumed" (i.e; neutralized) per gram of the antacid Ca(OH)2. Assume the denisty of stomach acid is 1.02 g/mL
Osmosis occurs when the solvent molecules move from a solution of higher solute concentration to a solution of lower solute concentration.
How many grams of sodium fluoride should be added to prepare the buffer solution? Neglect the small volume change that occurs when the sodium fluoride is added.
The temperature is 2200 oC inside the lightning bolt, the bolt lasts long enough for all three species to reach equilibrium at that temperature, and the pressure of NO is 0.001 atm at equilibrium. Calculate the standard free energy change ΔGo for ..
A fertilizer manufacturing plant that produces 1,500 tons per day of fertilizer is known to emit particulate matter (PM) at a rate of 22 grams per ton of fertilizer produced.
Consider a 0.20 M NH3/0.20 M NH4CI bufffer. 0.002500 mol of HCI is added to 65.0 mL of the buffer. How many moles of NH3 and NH4+ remain once the solution has equilibriated. The ka for the equilibrium is 5.6 x 10-10
how far will they be separated (in cm) from each other on a plate when the solvent front is developed to 15cm? Draw an approximate picture if what the TLC slide would look like.
The original molarity of a solution of formic acid (HCOOH) with a Ka= 1.7*10^-4 whose pH is 4.52 at equilibrium is: A. 8.52 *10^-9 B. 2.24*10^-4 C. 6.78*10^-3 D. 3.54*10^-5 E. 5.32*10^-7
Creatine is a by-product of muscle metabolism, and creatinine levels in the body are known to be a fairly realiable indicator of kidney function.
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