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Free radicals are molecules that contain an odd number of valence electrons and therefore contain an unpaired electron in their Lewis structure. Write the best possible Lewis structure for the free radical HOO. Does the Lewis model predict that HOO is stable? Predict its geometry.
Assuming that the probability distribution is Gaussian, what is the probability (in %) that you will weigh out >47% more AgCl than the expected average amount
Consider: 2 B5H9 (g) + 12 O2 (g) ? 5 B2O3 (g) + 9 H2O (g) ?H?reaction= - 8687 kJ. What is the enthalpy change when 0.2500 moles of B5H9 are combusted
The sample is diluted with 73.505 g of water. A 12.973 g aliquot of this solution is then titrated with 0.1038 M HCl. It required 29.32 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.
What are the physical principles behind how they might work? (Hint- there is both thermodynamic as well as light absorption considerations.
The protein in a 1.285-g sample of an oat cereal is determined by the Kjeldahl procedure for organic nitrogen. The sample is digested with H2SO4, the resulting solution made basic with NaOH
Given a buret filled with 0.10 acetic acid and a second buret filled with 0.18 sodium acetate, how many milliliters of each solution should be mixed together to produce 18.0 of a solution with a of 4.87
Chester makes 1 L of a 0.01 M HCL solution and measure the pH. Burt then adds 5.80 g of sodium chloride to Chester's solution and measures the pH. Compute the difference between the two pH values obtained.
A 1.733 g sample of a metal reacts with hydrochloric acid to form a MCl2 type of salt and 380.0 mL of H2 at 20 degrees C and 720 torr pressure. a) Write a balanced net ionic equation for this reaction b) Determine identity of the metal.
List the letter that corresponds to the reagent from the reagent table you need to carry out the following synthesis in 5 steps or less. Heat may not appear on the reagent table with the reagent
Calculate the volume of 50 wt% NaOH solution needed to be diluted to 1 liter in order to make 1 liter of 0.1 M NaOH. Assume the density of 50 wt% NaOH is 1.5 grams of solution per mL of solution.
What volume of oxygen at 27.0 °C and 1.20 atm is required for the complete combustion of 14.0 g C2H4? C2H4 + 3 O2 ? 2 CO2 + 2 H2O
You carry out a titration of a pure weak triprotic acid and only see two major pH jumps. One at 10.0 mL and one at 15.0 mL. At what volume is the other equivalence point
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