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Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4. (a) When 11.50 mL of 0.470 M HNO3 have been added. (b) When 65.00 mL of 0.470 M HNO3 have been added.
What mass of NaOH is needed to precipitate the Cd2+ ions from 48.0 mL of 0.500 M Cd(NO3)2 solution?
What volume of water vapor is created by the complete combustion of 38.7 liters of methane gas?
Which of the following is not a general characteristic of amides?
how many grams of KO2 are needed to produce 885.0 L of O2 at 22.0 degrees Celsius and 1.00 atm
A closed end manometer was constructed from a U-shaped glass tube which was 80.0 cm high. It was loaded with mercury so that the closed side was filled all the way to the top
Suppose a 5.00mL sample of vinegar required 27.58mL of 0.123 M sodium hydroxide to reach the endpoint. What is the molarity of acetic acid in the vinegar?
A 45g piece of ice at 0 degree C is added to a sample of water at 21 degree C. All of the ice melts and the temp of water decreases to 0 degree C. How many grams of water where in the sample?
Dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 2.33. Calculate the Ka for the acid.
An unknown compound containing only carbon and hydrogen was burned in excess oxygen. When 8.937 grams of the compound was burned, 28.042 grams of carbon dioxide and 11.482 grams of water were produced. If the unknown compound has a formula mass of..
Describe how you would prepare the above buffer solution if you only had NaH2PO4, and a solution of NaOH. What other equipment would you need?
Pancreatic lipases hydrolyze triacylglycerols (triglycerides) that have been emulsified by bile. Modify the triacylglycerol below to show the products of its hydrolysis
What are the atomic orbitals used in the double part of the double bond If the C-C axis of the given molecule is the y axis, and the x axis is up and down in the plane of the paper,?
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