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Calculate the mass percent of a solution that is prepared by adding 26.8 g of NaOH to 232 g of H2O
A buffer initially contains 0.10 mol acetic acid and 0.13 mol of sodium acetate in 1.00 L. 0.02 mol of potassium hydroxide is added to the buffer
A buffer solution is prepared by adding 0.20 mole of NH3 and 0.30 mole of NH4Cl to enough H2O to make one liter of solution.
1. Explain what is happening to electrons when light is emitted in emission spectra. 2. List the possible energy level changes for electrons emitting visible light in the hydrogen atom. What is the name of this series of lines?
Calculate the initial I- concentration in a solution containing 3.0mL of 0.20 M KI, 5.0 mL of 0.15 M (NH4)2S2O8, 5.0 mL of 0.25M (NH4)2SO4,
How much pre workout and creatine does it take to kill someone
Draw all products of the reactions of 4-Chloro-2-methyl-pentane with NaCN and AgCN. Identify the reaction mechanisms and draw resonance
The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 10-4 mol/L. A deep-sea diver breathes compressed air with the partial pressure of N2 equal to 3.6 atm. Assume that the total volume of blood in the body is 5.0 L. C..
What mass of NaOH is needed to precipitate the Cd^{2+} ions from 39.0 mL of 0.550 M Cd(NO3)2 solution?
What is your favorite Holiday food or beverage? List its ingredients. Write the molecular formula for each of the top 5 ingredients. For bonus points, determine the number of atoms your would consume when eating 25g of your favorite food. Can you ..
what would you have observed if you had added a concentration solution of nacl to the cocl2 coh2o6 equilibrium system?
what color will the solution appear? If 0.100 M NaOH is slowly added to the HCl sample, in what pH range will the indicator change color?
What do free radicals do?
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