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Which of the following solvent pairs could be used in a solvent pair recrystallization (in general, not for this specific reaction)? For those selected, briefly explain why. For those not selected, briefly explain why not.
a) Ethyl acetate and hexane
b) Water and diethyl ether
c) Methanol and methylene chloride
Question- The combustion of gasoline produces CO2 and H2O. Assume gasoline to be pure octane(C8H18) and calculate how many Kg of CO2 are added to the atmosphere per 1.0 Kg of octane burned.
What is the density of a gas in g/L that has a molecular weight of 144, if the temperature and pressure is 25 degree C and 750 mmHg?
Propionic acid and methyl acetate are isomers. Which has the higher boiling point and why? Which one would have the greater Rf value on TLC? Why
This solution is to be prepared by allowing water at a set pH to reach equilibrium with solid Fe(OH)3. What pH should be used for the aqueous solution to give this desired concentration of [Fe3+]
nh4no3 decomposes according to the equation...2nh4no3 s ---gt 2n2 s o2g 4h2o gwhat pressure in torr will develop in a
A reaction mixture initially contains 2.8M H2O and 2.6 M SO2. Determine the equilibrium concentration of H2S if Kc for the reaction at this temperature is 1.3 x 10^-6 ?
A 295 mL stock solution contains 2.3 M Ca(CN)2. When 100 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
Write the Solubility Product Constant (Ksp) expression for the following solution at 275oC. MgF2(s)Mg2+(aq) + 2 F-(aq) Given the solubility of MgF2(s)is 8.4 x 10-7M, calculate the value of Ksp for the reaction shown in question #2 at 275oC.
The peregrine falcon has been measured as traveling up to 350 km/hr in a dive. If this falcon could fly to the Moon at this speed, how many seconds would it take
show example of a standardization of a base naoh using primary standard khp show an
calculate the amount of heat trasnferred when 3.55 g of mgs reacts at constant pressure.2mgs 02g ---gt 2mgos heat
Problem- Gastric juice is made up of substances secreted from parietal cells, chief cells, and mucous-secreting cells. The cells secrete HCl, proteolytic enzyme zymogens, mucin, and intrinsic factor.
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