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Question - In Preparation of an alpha, beta-unsaturated ketone via Michael Addition + Aldol Condensation, why is water added to the reaction mixture during the isolation of the crude product?
The reactants are ethylacetoacetate and trans-chalcone -----> 6-ethoxycarbonyl-3,5-diphenyl-2-cyclohexenone
State your respond by means of significant figures.
Explain how many grams of H2O(g) are formed when 4.48 g of C7H12O2 is completely burned in in an oxygen atmosphere? mass of H2O (g)=
what is the representation of the transitition state for the rate determing step in the reaction of tert-butyl alcohol with HBr
Lactic acid, C_3H_6O_3, is found in sour milk. A solution containing 1.00 g NaC_3H_5O_3 in 100.0 mL of 0.0500 M C_3H_6O_3 has a pH = 4.11. What is Ka of lactic acid
At a certain temperature the equilbrium constant is 396 K for H2(g) + I2(g) ↔ 2HI(g) , Calculate the the equilbrium constant for 0.5H2(g) + 0.5I2(g) ↔ HI(g)
For each of the following combinations of (delta H) ?H° and (delta S ) ?S° for the reaction at 25 ° C, describe whether or not the reaction will be spontaneous at 25 ° C and what will happen it the temperature is increased. Explain your descriptio..
The physician has ordered 1.00 g of tetracycline to be given every 6 hours to a patient. If your stock on hand is 500 mg tablets, how many will you need for 1 day's treatment
A laboratory technician needs to make 500.0mL of a 0.25 M NaOH solution. What mass of sodium hydroxide does the technician need to use?
you add 7.3 iron to 25.10 of water and observe that the volume of iron and water together is 26.03. calculate the
Use this ratio and that you collected 11 mg of 4-bromonitrobenzene to estimate the experimental yield of mononitration in the reaction. What errors are there in using this method to calculate the extent of mononitration
Why is it necessary to add sodium chloride to the steam distillate before carrying out ether extraction
a proposed mechanism for a reaction isc4h9br --gt c4h9 br-slowc4h9 h2o --gt c4h9oh2 fastc4h9oh2 h2o --gt c4h9oh h3o
A student heated a 4.901 g sample of hydrated iron chloride. After heating, the anhydrous iron chloride has a mass of 3.010 g. Calculate the percentage by mass of water in the hydrated compound.
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