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If you were extracting 4-chloroaniline and naphthalene (a mixture in ether), what reagents could you use to obtain a separation via extraction technique
A chemist adds 295.0mL of a 0.071M potassium permanganate (KMnO4) solution to a reaction flask. Calculate the mass in milligrams of potassium permanganate the chemist added to the flask.
How then, how would I calculate the pH of a buffer + NCl after taking 32 mL of the solution noted above and pipet 1.0 mL of 6.0 M HCl with the pH of buffer + HCl = 4.41
A chemist adds 120.0mL of a 1.12mol/L silver nitrate solution to a reaction flask. Calculate the mass in grams of silver nitrate the chemist added to the flask
Copper(I) chloride is a slightly soluble salt. The copper(I) ion also combines with Cl- in excess chloride to form the complex ion CuCl2-. Calculate the molar solubility of CuCl(s) in 0.0667 M KCl.
The standard deviation is 50768, and the RSD % is 12.4%. The original mass of the tablet was 679.1 milligrams. How do I find how many milligrams of caffeine was in the original tablet
Find the concentration of Cu2+ in equilibrium with CuBr(s)and 0.10 M Br
Calculate the number of moles of bromine present in 14.5 mL of Br2(l), whose density is 3.12 g/mL.
If the reaction of 0.650 g of rhodium(III) sulfate with excess sodium hydroxide produces 0.320 g of rhodium(III) hydroxide, what is the percent yield
If solutions of NH4Cl (aq) and NH3 (aq) are mixed, which ions in the resulting solution are spectator ions in any acid-base chemistry occurring in the solution
What fragmentation would give rise to the peak at m/z 45 in the Mass Spectrum. Loss of hydroxyl group.
If the decay of trihalomethane is first order,and 90% of the trihalomethanes in glass of tap water are gone after 3 hours, what is the decay rate constant
When 0.0024 moles of a weak acid are dissolved in enough water to make 0.500 L, the pH of the resulting solution is 5.28. Calculate Ka.
if the hindenburg held 2.0 times 10^5 m^3 of hydrogen gas at 23 degrees C and 1.0 atm, what mass of hydrogen was present
After complete combustion, a 0.4946-g sample of the compound yields 0.7092 g of CO2, 0.4355 g of H2O, and 0.3812 g of P4O10. What is the empirical formula of the compound
2HCrO4 ^- <--> Cr2O7 ^2- + H2O Determine concentrations of Dichromate ion and Bichromate ion if we add .1mol/L of bichromate ion and no dichromate ion once reaction reaches equilibrium.
Calculate the volume in liters of a 0.00360 mol/L calcium sulfate that contains 75.0g of calcium sulfate (CaSO4)
If you didn't have a computer or data system available, how would you measure the area of the peak. After all, someone's DUI may hinge on this measurement, and you may have to defend your calculatio
A mixture initially contains A, B, and C in the following concentrations: [A] = 0.650 M, [B] = 1.35 M, and [C] = 0.300 M. The following reaction occurs and equilibrium is established: A+2B<->C
Based on the number of chiral centers in Morphine, determine the maximum number of stereoisomers that are theoretically possible
While using the Half Volume method, your solution was dark pink (you overshot the endpoint) and you added the unreacted acid to this solution
Air is approximately 80% nitrogen and 20% oxygen by volume, what is density of air at 273 K and 1 atmosphere? And at a altitude of 2550 ft would density of air be higher or lower, why
After 63.0 min, 24.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
Consider the reaction when aqueous solutions of barium acetate and chromium(III) iodide are combined. The net ionic equation for this reaction is
The relationship between Kp and Kc for gaseous reactions depends on the change in the total moles of gas between reactants and products. For each of the equations given at the right, select the corr