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The solubility of a compound is 59g per 100ml of boiling methanol and 30g per 100ml of cold methanol, whereas its solubility in water is 7.2g per 100ml at 95°C and 0.22g per 100ml at 2°C. Which solvent would be better for the recrystallization of the compound? Explain.
A student mixes 5.0 mL 2.00 x 10-3 M Fe(NO3)3 with 4.0 mL 2.00 x l0-3 M KSCN, and 1.0mL deionized water. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.2 x l0-4 M.
Calculate the molar mass of a gas that has a density of 143 g/mL at 23 degrees celcius and a pressue
Draw 3 different Lewis structures for a compound with the molecular formula C6H14O; then draw both the condensed formula and the line-angle structure for each.
What is Ka? The answer is 8.1E-10. Hope you can help
A gas expands and does P-V work on the surroundings equal to 283 J. At the same time, it absorbs 216 J of heat from the surroundings. What is the change in energy of the system
helium has a density of 1.79 x 10-4 gml at standard temperature and pressure. a balloon has a volume of 6.3 liters.
Calculate the mass percent of methanol, ethanol, and MTBE, that must be present in gasoline to yield a mixture of 1.8% oxygen by weight.
Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide: 4HCL(aq) + MnO2(s) ----> MnCl2(aq) + 2H2O(l) + Cl2(g)
a gas sample containing 1.50 mol at 25 exerts a pressure of 400 torr. some gas is added to the same container and the temperature increased to 50 C. If the pressure increases to 800. torr, how man moles of gas were added to the container? assume a..
Solving this question helps the student to understand how to find the limiting reactant and how much product is produced and What mass of product may be produced?
Describe any important differences between benzopinacol and benzopinacolone in the IR, H NMR spectra.
gout is caused by an error in nucleic acid metabolism that leads to a buildup of uric acid in body fluids which is
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