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Starting with the supernatant collected after the initial crystallization, suggest a procedure to isolate and purify the R-(+)-phenylethylamine enantiomer. (This was contained in the supernatant that you decanted off after the initial crystallization). How would you collect this other enantiomer
Magnesium hydroxide is 54.87% oxygen by mass. How much oxygen is in 114 g of the compound?
we learned that an acyl chloride and amine can react to form an amide. however im wondering if another amine can then
Determination number Initial concentration of CLO2, mol/L Initial concentration of OH^-, mol/L Initial rate for formation of CLO3^- mol/L.s 1 1.25 x 10^-2 1.30 x 10^-3 2.33 x 10^-4 2 2.50x10^-2 1.30 x 10^-3 9.34x10^-4 3 2.50x10^-2 2.60 x 10^-3 1.8..
A first-stage recovery of magnesium from seawater is precipitation of Mg(OH)2 with CaO: Mg2+(aq)+CaO(s)+H2O(l)---->Mg(OH)2(s)+Ca2+(aq).
A patient's blood test shows that she has elevated levels of LDL (low density lipoproteins) at 4.12 mmol/L. Convert this concentration to units of molarity (mol/L).
CO(g) + NO2(g) ------> CO2(g) + NO(g) rate= k(NO2)^2 Suggest a plausible mechanism for the reaction, given that the unstable species NO3 is an intermediate.
In a second-order reaction the rate constant is 4.00 × 10?4 M?1 s?1. What is the concentration of reactant after 10 min if the initial concentration is 0.800 M
36.8mL of hydrogren gas, from the reaction of a piece of magnesium ribbon with hydrochloric acid, are collected over water in a eudiometer. The temp of the hydrogen gas at 21C, and the atmospheric pressire is 768mmHg.
A certain quantity of helium gas is at a temperature of 27degrees C and a pressure of 1.00 atm. What will the new temperature be if its volume is doubled at the same time that its pressure is decreased to one half of its original value?
what mass of Fe (OH)3 would be produced by reacting 75.0 mL of a 0.0815M Fe( NO3)3 solution with 125 mL of a 0.150 M NaOH solution
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 1-bromopropane. Draw the chemical structure of the alkene that you could make using these reagents in a synthesis that involves the Wittig reaction.
Based upon 3 SnF2 (ag) + 2 K3PO4 (aq)> Sn3(PO4)s (s) + 6 KF (aq), a 10.000 gram sample of toothpaste containing stannous fluoride gives a 0.145 gram precipitate of stannous phosphate. What is the percentage of SnF2 in the toothpaste sample?
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