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Consider titrating 15.0ml of a .245M solution of hydazine, H2NNH2, with a .453M HCl solution. The Kb value for hydrazine is 1.3x10^-6 b) what volume of HCl needs to be added to the solution in oder to have a bffer system with the maximum capacity for added acid or base? c) what is the pH of the solution before any HCl has been added? d) what is the pH of the solution after the addition of 3.0 ml of HCl? e) What is the pH of the solution at the equivalence point? f) what is the pH of the solution when 5.0ml more of the HCl solution is added after the equivalence point has ben reached?
How many grams of NaCl are needed to prepare 250 mL of an isotonic saline solution with a concentration of .90% , assuming a solution density of 1.0g/mL
A household lightbulb is a blackbody radiator. Many light bulbs use tungsten filaments that are heated by electric current. What temperature is needed so that ?max=550nm?
Suppose that the gas-phase reaction A B and B A are both elementary processes with rate constants of 6.56e-02 s-1 and 3.51e-04 s-1, respectively
Arrange the molecules in order of decreasing boiling point Molecules are methane, dimethyl ether
The density of silver is 10.5g/cm3 what is the volume im cm 3 of an ingot of silver with mass 0.743 kg. If this sample of silver is a cube how long in each edge in cm
In a reaction between pure acetic acid and sodium bicarbonate, 26.6 grams of sodium bicarbonate was added to 12.0 mL of acetic acid. Which reactant is the limiting reactant in this reaction
Nitrogen and oxygen do not react appreciably at room temperature, as illustrated by our atmosphere. But at high temperatures, the reaction below can proceed to a measurable extent.
Calculate the energy (joules) required to achieve the transition from the ground state to the first excited state for this system.
Balance the following reaction: Manganese(V) sulfate reacts with chromium(III) sulfate and water to give manganese(II) sulfate, chromium(VI) oxide
Select the statements that correctly describe the regio- and stereochemical outcome of the hydroboration-oxidation reaction: (A) syn-addition of H-B species; (B) anti-addition of H-B species
A mixture of camphor and water boils at approximately 99.1?C. At this temperature the vapour pressure of water is 736 mmHg. Calculate the percentage of camphor and water in the steam distillate by number of moles.
Considering the given equation KOH + CH 3 COOH ---> KCH 3 COO + H 2 O determine the volume of 0.157M solution Potassium hydroxide is essential to react with 0.385g of Acetic acid? express your answer in mL
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