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Lithium reacts with oxygen to make lithium oxide. Explain what is the maximum mass of lithium oxide (g) that could be prepared from 19.63 g of Li(s) and 80.78 g of O2(g)?
"Crossed" or "mixed" aldol condensations are practical for synthesis, if one of the aldehydes (or ketones) has no alpha-hydrogen atoms. Explain.
Then 40.0 mL of this solution were titrated with 0.060 M HClO4. Calculate the pH at the first equivalence point.
Compute the pH of 500 ml of ac solution that is 0.200 M in C6H5NH2 (aniline) and 0.100 M in C6H5NH3Cl (aluminum chloride) (kb of aniline = 4.3 *10 -10). Also calculate the change in pH if 10 ml of 0.200 M HCl is added to solution above.
increased the space between the energy levels keeping the temperature fixed or (ii) increased the temperature and keeping the energy levels fixed.
Use the Heisenberg uncertainty principle to calculate the uncertainty (in meters) in the position of a honeybee weighing 0.65g and traveling at a velocity of 0.90m/s
If you have 21.1 g of iron(II) nitrate that is dissolved to give 1.54 L of oslution, what is the molarity of the solution. What is the molarity of the nitrate ions
Using structures and your own words, explain why acetic acid (CH3COOH; you can look up the structure of the carboxylic acid if you're unsure) is more acidic than ethanol (CH3CH2OH)
Write the balanced net ionic equation for the reaction that occur in the following case. and identify the spectator ion(s) in this reaction Cr2(SO4)3(aq)+(NH4)2CO3(aq)
Torsional strain is exhibited during exclipsed Newman Projections. Where would steric hindrance be demonstrated? At any point in a Newman Projection
For your unknown titration, indicate whether the pH at the equivalence point should be equal to 7.0, greater than 7.0, or less than 7.0. Explain your choice, including the appropriate balanced net ionic equation.
Presume that you need to prepare 4-methyl-2-pentyne also discover that the only alkynes on hand are acetylene and propyne. You as well have available methyl iodide, isopropyl bromide, and 1, 1-dichloro-3-methylbutane. Sketch an efficient synthesis..
A certain enriched sample of uranium contains 92.000% U-238 and 8.000% U-235. What is the average atomic weight of the uranium atoms in this sample? The isotopic masses of U-235 and U-238 are 235.0439 amu and 238.0508 amu, respectively.
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