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Draw the Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge?
Explain the use of beta-alanine? Is it used as a H+ source, or something else? Why can malonic acid be reacted in V-D modification, while only its ester can be reacted in standard Knoevenagel condensation conditions?
Quinine (C20H24N2O2) is the most important alkaloid derived from cinchona bark. It is used as an antimalarial drug.
we need to dry something like protein and drugs, how to deal with them to avoid the deactivation phenomenon?
find the mass of barium metal(in grams) that must react with O_2 to produce enough barium oxide to prepare 1.0L of a 0.10M solution of OH^-
what is the K value for compound Z in the biphasic system, 2) how much do you remove in each individual extraction
Consider the reaction that occurs when a solution containing hydrochloric acid (HCl) is added to a solution containing the weak base methylamine (CH3NH2). Write the molecular equation for the reaction
A fishing boat accidentally spills 15.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 x 10^2 nm thick, how many square meters will the oil slick cover? Assume that the oil slick forms a ..
A solution of hydroiodic acid is 0.057 M HI. What is the hydronium-ion concentraion at 25 degrees C?
Application of the concepts of VSEPR theory leads us to conclude that the shape of the SO3 molecule is
If 1.0 mL of vinegar needs 22.5 mL of 0.195 M NaOH to reach the equivalence point in the titration, what is the molarity of the original vinegar solution?
The volume of a mass of gas is 300ml at 25 degree celcius and 685 torr.
CO2 Dissociation by means of electronic excitation. Using Fig. 5-6, calculate the decrease in energy thresh- old of the CO2 dissociation through electronic excitation related to preliminary vibrational excitation
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