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1) How would you prepare a trans alkene from an alkyne? Give its mechanism.
2) Arrange the following in the decreasing order of their basic strength. Justify your answer. Alkanide anion; alkenide anion; alkynide anion
3) What is resonance energy? Explain taking the example of benzene.
4) What do you understand by para-directing activators, para-directing deactivators and meta-directing deactivators?
Draw the mechanisms and products for the synthesis of vitamin D from 7-dehydrocholesterol. Draw all of the orbitals involved in these reactions and explain the reason for certain conditions and resulting product geometry.
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
An air bubble has a volume of 0.500 L at 18 degrees C. If the pressure does not change, what is the volume, in liters, at each of the following temperatures? a) 0 degrees C; b) 425 K; c) -12 degrees C; d) 575 K.
Draw the major organic product from reaction of 1-butyne with NaNH2, then CH3Br. If no reaction occurs, write ethane, CH3CH3.
A 13 mL sample of a solution of AlBr3 was diluted with water to 27 mL. A 15 mL sample of the dilute solution was found to contain 0.044 moles of Br-. What was the concentration of AlBr3 in the original undiluted solution
The healthcare provider recommends that she take the Benedict's test. Assume that the glucose levels of the patient are high. State the composition and the properties of the ketohexose derived from fruit jam.
bathed by an atmosphere of nitrogen at 77K and 1 bar? Assume every nitrogen molecule that strikes the surface sticks and that a nitrogen molecule covers an area of 1.1e^5 pm^2.
A 240.0 mL buffer solution initially contains 3.0×10-2 M of HCHO2 and 3.0×10-2 M of NaCHO2. What mass of the correct reagent should you add
What is the formula weight of KI? What quantity of KI is present in 301 mL of a 0.30 M solution?
2 Co (NO3)3 + 3 (NH4)2 S = Co2 S3 +6NH4 NO3 How many nitrogen atoms are on each side of the equation
Weak acid unknowns with a solution of NaOH of about 0.10 mol/L.
The specific heats of ice and water are 2.09 and 4.184 J/g.°C, respectively. The heat of fusion for water is 334 J/g.
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