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The pH of 0.325g of aspirin (Molar mass 180.2) tablet in 0.5L water is 3.03, What is the pKa for weak, monoprotic acid aspirin? do not disregard x
Calculating Kc, Given the amount of reactant in grams in a container at a temperature and amount produced in moles, calculate Kc:
The entropy of sublimation of a certain compound is 7.2 J / K mol at its normal sublimation point of 76 C. Calculate the vapour pressure in torr of the compound at 28 C.
18.6 grams of a solute with moecular mass of 8940 grams are dissolved in enough water to make 1.00 dm^3 of solution at 25 ^0C. What is the osmotic pressure of the solution?
Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH (before any NaOH is added)? What is the pH after 31.9 mL of NaOH are added?
Why should a distilling flask be filled to not more than two-thirds of its capacity at the beginning of a distillation procedure?
how many years would it take for a 10-gram sample of U-238 to decrease to 2.5 grams?
How many grams of oxygen reacted with the phosphorus?
A 787 mL gas sample at STP is compressed to a volume of 226 mL, and the temperature is increased to 29?C. What is the new pressure of the gas in Pa.
If you used 0.165 mL of acetic anhydride, and 0.167 g of p-aminophenol. How many moles of the non-limiting reageant remained after the reaction was complete?
A sample of neon gas is held in a rigid 1.814L container with a pressure of 1.273atm at 25 C. 3.193g of an unknown gas is added to the container. The temperature remains constant, but the pressure rises to 2.386atm. What is the molar mass of the a..
What mass of copper would you expect to be deposited from a copper (II) sulphate solution using a current
What components of phospholipids contribute to the liquid crystal nature of membranes
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