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In which of the following reactions does an instantaneous increase in the volume of the reaction vessel favor formation of the products?
A N2(g) + 3H2(g) = 2NH3(g)
B PCl5(g) = PCl3(g) + Cl2(g)
C N2(g) + O2(g) = 2NO(g)
D H2(g) + I2(g) = 2HI(g)
E MgO(s) + CO2(g) = MgCO3(s)
Explain 3-A 0.421 g sample of aspirin prepared in the laboratory is dissolved in 95% ethanol, diluted with water, and titrated to a phenolphthalein endpoint with 17.3 mL of 0.114 M NaOH. What is the percent purity of aspirin in the sample?
What is the boiling point (in ?C) of each of the solutions below? For water, Kb = 0.51(?C ? kg)/mol. The vapor pressure of water at 45.0?C is 71.93mm Hg.
A 800 mL sample of a saturated aqueous solution of calcium oxalate, CaC2O4, at 95 degrees C is cooled to 13 degrees C. How many milligrams if calcium oxalate will precipitate?
Write the electron configuration of the alkali metal (M) that reacts with oxygen to yield an oxide, M2O, if 3.54 g of the metal reacts
Is the solubility of a cation predictable from the position of its element in the Periodic Table? Is precipitate color predictable from the position of the cations element in the Periodic Table?
Calculate the molarity of each of the following solutions. (a) 23.0 g of ethanol (C2H5OH) in 545 mL of solution (b) 15.4 g of sucrose (C12H22O11) in 74.0 mL of solution
Explain how would prepare 2.5 mL. of a solution with an equal pAg from 7.5 to AgNO3 and Ag2SO4. Remember that the pAg will serve to determine the concentration of Ag + in solution.
Give Structures- Indentify unknown organic liquids, An unknown organic liquid, A, was found to burn with yellow, sooty flame and give a positive Lucas test (about 5 min). Upon treatment with sodium dichromate-sulfuric acid solution it produced Comp..
what mass of limestone is required to remove all the sulfur dioxide formed by the combustion of 9.2 X 10^4 kg of coal that is 0.33 mass % sulfur?
If 2.00 g of Mg reacts completely with 50.0 mL of HCI solution, what is the molarity of the HCI solution?
The normal boiling point of methane is -161.5 C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J/g.K, respectively. What is the final temperature of methane once the system equilibriates?
llustrate on example between an ionic amino acid side group and the organic portion of your drug that has an ionic charge.
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