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The first step of the Wittig reaction occurs through what kind of mechanism? A. acid-base B. SN2 C. rearrangement D. nucleophilic acyl substitution
What would the molecular orbital diagram for a compound made of equal portions of aluminum and phosphorous look like
Consider the Lewis Resonance structure for the chlorite ion. How many total structures can be drawn, and how many of those structures obey the octet rule?
What is the concentration of a solution of lithium carbonate containing 0.01 mol in 750 mL of solution? Give your answer to two significant figures and include the units as mol L-1 ie 0.36 mol L-1
A gas sample containing 1.64 mol at 25°C exerts a pressure of 389 torr. Some gas is added to the same container, and the temperature is increased to 50.°C.
Three gases, nitrogen, helium, and krypton are confined in a 9.00 L vessel at a pressure of 7.00 atm. The vessel contains 5.00 moles of nitrogen, 2.00 moles of helium, and 2.00 moles of krypton. What is the partial pressure of helium
A 0.204-g sample of a CO3^2- antacid is dissolved with 25.0 mL of 0.0981 M HCl. The hydrochloric acid that is not neutralized by the antacid is titrated to a bromophenol blue endpoint with 5.83 mL of 0.104 NaOH.
Calculate the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3 (Kb = 1.8x10-5)
complete and balance the equations for each of the following reactions: a)KHCO3(s)+HBr(aq)> b)Ca(s)+H2SO4(aq)> c)H2SO4(aq)+Ca(OH)2(s)> d)Na2CO3(s)+H2SO4(aq)>
The heat of combustion of cyclobutane is 650.3 kcal/mol. How much energy is released during the complete combustion of 450 grams of cyclobutane.
A saturated solution of Pb(IO3)2 in pure water has a lead ion concentration of 5.0 x 10-5 Molar. What is the Ksp value of Pb(IO3)2?
Five grams of the specified pure solvent is placed in a variable volume piston. What is the volume of the pure system when 50% and 75% have been evaporated at: (i) 30 deg C (ii) 50 deg C?
A compounds H NMR spectrum shows a resonance at 5.47 and 3.49 ppm. What possible structural subunit does the compound contain
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