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For which of the following equilibria does Kc correspond to an acid-ionization constant, Ka? NH3(aq) + H3O+(aq) NH4+(aq) + H2O(l) NH4+(aq) + H2O(l) NH3(aq) + H3O+(aq) NH4+(aq) + OH-(aq) NH3(aq) + H2O(l) HF(aq) + OH-(aq) H2O(l) + F-(aq) F-(aq) + H2O(l) HF(aq) + OH-(aq)
A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere of average radius 7.5x10^5 km, calculate the average density of the star in units of grams per cubic centimeter.
Assuming the kinetics of teh microorganisms enzymatic action is responsible for the rate of decay
If the silver -silver chloride electrode is replaced with a saturated calomel electrode, what is the new cell voltage?
what percent of ca3po42 a major component of bone is ca and what mass of ca is present in 1 kg ca3po42? 3.46 how many
calculate the molarity of acetic acid in a vinegar sample knowing that 5.00 ml of vinegar requires 43.50ml of 0.105m
What is the source of drinking water in your community? What steps are used in purifying it? Be sure to list the name of the reference you use to gather this information. If you use an internet source, provide the name of the internet source and ..
nonionic solute in 50.0g of water. The solution freezes at -0.1455 degrees C. what is the molar mass of the solute?
what is the strongest intermolecular force in a liquid containing molecules
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.150 M HClO(aq) with 0.150 M KOH(aq). The ionization constant for HClO is 4.0*10^-8
A 51-kg person drinks 390. g of milk, which has a "caloric" value of approximately 3.0 kJ g-1. If only 16% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
If 5.0 mL of . 85 M bleach solution is combined with 45.0 ml of .1 mM dye soultion at 30 degrees celcius, what will bre the therorectical concentration of dye in the reaction mixture after 60 seconds
If you wanted to adapt this procedure to prepare the analogous propoxy compound, how much propyl iodide would you have to use to carry out the reaction on the same scale?
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