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Assume an indicator works best when the equivalence point of a titration comes in the middle of the indicator range. Which indicator would be best for the following titration? 0.100 M hydrazine (Kb = 3.0 × 10-6) + 0.100 M HCl
Assume that the pH is low enough that CH3COOH is not dissociated at all and that the activity of water equals 1 just like for pure liquid water (after all, the solution is quite dilute). HINT: This problem requies you to keep and extra large numbe..
how many grams of carbon dioxide and water will be produced from a mixture that contains 42.0g of propane and 258 grams
A formate buffer (pka = 3.75) is prepared by mixing 50 mL of a 4 M formic acid and 2 g of solid sodium hydroxide (MW= 40g/mol) in total volume of 1.0 L. A peptide with the amino acid sequence C-P=T-Y-R-L-D-Q (MW = 995.12 g/mol) is dissolved in thi..
A 150.0-mL sample of the saturated solution is withdrawn and the radioactivity measured at 33 counts per minute. From this information, calculate the Ksp value for Hg2I2.
How long does it take to deposit a coating of gold 1.00um thick on a disk-shaped medallion 4.00 cm in diameter and 2.00 mm thick at constant current of 89 A?
Using Heisenberg's uncertainty principle, calculate the uncertainty in the position of a 1.50 mg mosquito moving at a speed
If 37.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.700 g precipitate, what is the molarity of lead(II) ion in the original solution?
Determine the [H3O+] and pH of each of the following solutions at about room temperature. Be certain to show the chemistry behind each problem.
Procedure General flow and logic Temperatures Times Solvents Techniques used to make the products At least one test (your choice) to verify your product the reaction of 2 methyl 2 octene with HBr reacting with heat and CH3Br
in the final step of the purification process in the miniscale procedure for preparing 1-bromobutane from sodium
A particular element exists in two stable isotopic forms. One isotope has a mass of 34.9689 amu ( 75.77% abundance). The other isotope has a mass of 36.9659 amu. Calculate the average mass of the element and determine its identity.
Calculate the activity for CS2 at mole fraction CS2=.722 for a Raoult's Law standard state using the following data: PCS2=446.9 Torr, and P*CS2=512.3 Torr
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