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If your titration solution is 0.420 M in NaOH, and the endpoint occurs at 13.70 mL of titrant, how many mmol of NaOH are required to reach the endpoint? How many mmol of acetic acid (HC2H3O2) are required to react with the NaOH? How many grams of acetic acid is this? If the mass of analyte is 10.20 grams, what is the mass % of acetic acid in the analyte?
When 414 J of heat is added to the gas, it expands and does 104 J of work on the surroundings. What is the value of delta H?
The calculations are based on the principal components of meat being fat ( acetone soluble) and protein (acetone insoluble or fat-free meat in report sheet ). ... information, the calculations correctly calculate what quantity, % fat or % fat-free..
consider the titration of a 26.0 mL sample of .175M CH3NH2 with .155M HBr. Determine each of the following. 1) the initial pH 2) the volume of added acid required to reach the equivalence point
For the reaction: PbCl2(s) ? Pb2+(aq)+2Cl1-(aq), what is Q* when 3.9 mL of 0.080 M lead nitrate is added to 13 mL of 0.020 M sodium chloride? Ksp of lead chloride is 1.6 x 10-5 M3.
a solution of 100 ml of .200 M KOH is mixed with a solution of 200 ml of .150 M NiSO4. what is the chemical equation, what precipitate forms, what is the limiting reagent, and how many grams of the precipitate form?
Glass tempering can be accomplished by both thermal and chemical means. Each puts the near surface region of the glass piece into compression, thereby suppressing growth of surface cracks.
why is it important to immediately cover the Mg ribbon with the other slab of dry ice once it starts burning?
You mix 55 mL of 1.00M silver nitrate with 25 mL of 0.81 M sodium chloride. What mass of silver chloride should you form?
With a solution in them connected by a liquid salt bridge junction filled with KNO3. In one solution you have a graphite electrode that is connected with a wire to a copper electrode in the second soution. The soution in contact with the graphite ..
Benzoic acid is used to titrate an unknown base, and the pH of solution is recorded during the titration. Halfway to the ultimate endpoint of the titration, the pH of solution was recorded at 7.64. What is the value of Kb for the unknown base?
How many moles of solute are present in each of the following solutions. (a) 145mL of 0.25M NaHCO3 (b) 631.0mL of 2.25M H2SO4
The chlorofluorocarbon CCl2F2 was once used in air conditioners as the heat transfer fluid. Its normal boiling point is 30 °C, and its enthalpy of vaporization is 165 J g-1
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