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Why is the difference in names between HCN,hydrogen cyanide and KH,potassium hydride?
When 1.00 L of water from the surface of the Dead Sea is evaporated, 179 g of MgCl2 is recovered. What is the molarity of MgCl2 in the original sample
What product(s) are expected in the ethoxide-promoted β-elimination reaction of 2-bromo-2,3-dimethylbutane? Omit ions, salts
You start with 100.0 mL of a 0.2500 M solution of NaCl sitting in a beaker. After several days you test the solution and find that it is now 0.3125 M. How much water must have evaporated?
Calculate the concentration of an pilocarpine solution with a pH = 9.34. The Kb of pilocarpine is 7.41x10-8 i need to know the steps to do problems like this one, if the steps can be simplified that would be great, thanks a lot.
a question about an organic chemistry lab report. I am synthesizing aspirin (acetylsalicylic acid) using salicylic acid, acetic anhydride, and a catalyst.
Describe the titration curve for the titration of a weak base with a strong acid. Indicate the chemical reaction, the points that correspond to the equivalence point, the pH = pKa and the region with maximum buffering.
A 25.0 mL sample of 0.400 M NH3(aq) is titrated with 0.400 M HCl(aq). What is the pH at the equivalence point. (Kb of NH3 = 1.8 ´ 10-5)
if 100L of hydrogen gas at 20 atm and 259 k reacts with excess nitrogen,how many liters of NH3 at 500 k and 1 atm will form
A titration is performed by adding 0.400 M KOH to 40.0 mL of 0.300 M HCl. What is the pH after addition of 5.0 mL of the base?
octane gas reacts wuth oxygen to form carbon dioxide gas and water as a gas. write balanced equation. how many grams of oxygen must react with 50 grams of hexane gas?
in the titration of 50.0 ml of 1.0 m methylamine ch3nh2 kb 4.4 10-4 with 0.50 m hcl calculate the ph under the
SO2 and O2 react together to form SO3. The resulting reaction mixture is an equilibrium involving all three compounds. Which of the following changes will cause the equilibrium to shift to the left
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