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Synthesis of pyrrole by flow chemistry:
starting materials: 2,5-hexandione and ethanolamine
product: 2,5-Dimethyl-1H-pyrrole-1-Ethanol
reagents: MeOH, then acetone
1) How does the acetone in your receiving flask during the flow experiment quench the reaction? Provide the product that is formed. (Hint: What is the limiting reagent for the reaction?)
2) Why do you extract the organic layer with 1 M HCl during your work-up?
In the Macy's Thanksgiving Day parade, 2000, there was a new float, the Cheerios' bee, and Buzz bee. The jar of honey it was holding contained 36,763 L of helium.
A sodium hydroxide solution of unkown concentration is standardized against potassium biphthate. It takes 37.35 mL of the NaOH solution to neutralize 0.777 grams of KHP. Explain what is the molarity of the sodium hydroxide. Molar mass of KHP= 204 ..
A solution of h2so4 with a molal concentration of 6.80 has a density of 1.318 g/ml. What is the molar concentration
Half-life equation for first-order reactions: (the 1/2 in t1/2 is a subscript) t1/2=0.693/k where t1/2 is the half-life in seconds (s) , and k is the rate constant in inverse seconds (s^-1).
Throughout the addition of bromine to trans-cinnamic acid, the following amounts were used: 10.0 mmol trans-cinnamic acid, 6.0 ml glacial acid, and 10 ml 1.0 M solution of bromine in acetic acid.
1- how many moles ofnbsp naoh are required to prepare 5.00 l of 0.025 m solution?2-what would be the molarity of a
convert back to molarity. And since it is a strong acid, you would just take the -log(KOH or OH-) then subtract this number from 14. From this I get 11.85, however the answer is 10.98. Can somebody tell me where I'm going wrong in detail?
The following label was found on a bottle of liquid hydrocarbons in the laboratory of Dr. Ima Turkey following his disappearance under mysterious circumstances. Although the name defines a structure unambiguously
A 12.0 g sample of solic NH4Cl is heated in a 5.00 L container to a high temperature. At equilibrium, the pressure of NH3 (g) is 1.22 atm. What is the value of Kp for the reaction
For the chemical reactions shown below, calculate the number of electrons transferred in the redox process. 2Cr2(O7)2- (aq) + 16H+ (aq) --> 4Cr3+ (aq) +3O2 (g) + 8H2O (l)
diamond powder (C) and BaCO3, separates the mixtures and recovers 1.75g sugar, 0.86g diamond powder and 2.29g BaCO3(s). Calculate the percent recovery and percent composition if the initial mixture they started with weighted 5.08g
Create a MO diagram for N2. Label molecular orbital energy levels with elctron configurations and imaging designations (LUMO, LUMO + 1, etc) Provide the molecular electron configuration and bond order.
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