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A solution of NaOH with pH 13.68 requires 35.00 ml of 0.128 M HClO4 to reach the equivalence point. What is the volume of the NaOH solution
An indicator has a pKa of 5.7 . It is colorless in acid solution and deep green in alkaline solution.
Given three acid-base indicators - methyl prance ( end point at pH 4 ) bromthymol blue ( end point at pH 7) , and phenolphthalein ( end point at pH 9) select a suitable indicator for the following t
Assuming that the following structures exist, what is the bond hybridization of IF6- and IF4-? Would they be stable?
Give the structure of a compound that has a formula of C6H12O and has a triplet (3H 1.1ppm), doublet (6H, 1.2 ppm), quartet (2H 2.4 ppm) and septet (1 H,2.7ppm ) in the 1H NMR spectrum? Please expla
After 52.0 min, 18.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
An automobile tire has a maximum rating of 38 psi (gauge pressure). The tire is inflated (while cold) to a volume of 11.8L and a gauge pressure of 36.0 psi at a temperature of 12.0C. While driving o
A cylinder contains 28.5L of oxygen gas at a pressure of 1.8 atm and a temperature of 298k. How much gas (in moles) is in the cylinder
What is the pressure in a 10.0L cylinder filled with .448 mol of nitrogen gas at a temperature of 315k
Zingerone (responsile for the pungent taste of ginger) is a naturally occurring compound, What orbitals are used to form the indicated bond? H3C-O
What is the volume occupied by 0.118 mol of helium gas at a pressure of .97 atm and a temperature of 305k?
A balloon contains 0.128 mol of gas and has a volume of 2.76L. If an additional 0.073 mol of gas is added to the balloon (at the same temperature and pressure), what will its final volume be.?
A syringe containing 1.55ml of oxygen gas is cooled from 95.3C to 0.0C. What is the final volume of oxygen gas
A buffer solution is prepared by adding 5.50 g of ammonium chloride and .0188 mol of ammonia to enough water to make 155 mL of solution . What is the pH of the buffer?
A 48.3ml sample of gas in a cylinder is warmed from 22C to 87C. What is its volume at the final temperature?
The net charge of a polypeptide at a particular pH can be determined by considering the pKa value of each ionizable group in the protein. For a linear polypeptide composed of 10 amino acids, how man
A sample of gas has an initial volume of 2.8 L at a pressure of 755 mmHg. If the volume of the gas is increased to 3.7L, what will the pressure be
Write a balanced net ionic equation for the reaction of each of the following aqueous solutions with H+ ions. Sodium fluoride
If a triacylglycerol in peanut oil that contains one palmitic acid, one oleic acid, and one linoleic acid is completely hydrogenated, what is the product
Identify each of the following as saturated, monounsaturated, polyunsaturated, omega-3, or omega-6 fatty acids.
The solid KIO3 is diluted shy of the 100mL mark in the volumetric flask. does this technique error result in a reported molar concentration of KIO3 that is too high or too low
The initial concentration of lead(II)nitrate is 0.250M. and we used 1.00 ml. the lead(II)nitrate was titrated with 7.96 ml of 0.0500M of potassium iodide.
The molecular weight of X is 65.0 g/mol. The heat required to melt one mole of the solid phase is 20.0 kJ, the heat required to sublime one mole of the solid phase is 40.0 kJ, and the heat required
Calculate the pH of a solution resulting from the titration of 50mL of 0.033M HBr with 25 mL of 0.117M KOH. Give your answer to two decimal places.
If a laser operated on the n=5 to n=2 transition of a H atom, what wavelength in nm photon would be emitted? (E2= -82 kJ/mol, E1= -328 kJ/mol)