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The pH of a white vinegar solution is 2.29. This vinegar is aqueous solution of acetic acid with a density of 1.09 g/mL. What is the mass percentage of acetic acid in the solution?
Ka(acetic acid) = 1.8e-5
When a sample of Vanillin weighing 2.500g burns in Oxygen, 5.79g of carbon dioxide and 1.18g of water is obtained. What is the empirical formula of Vanillin?
water and placed in a polarimeter tube 20.0 cm long. The measured rotation was -2.17° at 25 °C. Calculate the specific rotation of the compound.
A piece of metal of mass 22 g at 92C is placed in a calorimeter containing 53.7 g of water at 21C. The final temperature of the mixture is 55.3C. What is the specific heat capacity of the metal?
Draw the mechanism that illustrates the conversion of 2-chloro-2-methylbutane to 2-methyl-2-butanol with water (H2O) as the nucleophile.
A sample of a gas occupies a volume of 323 mL at 625 torr. At constant temperature, what will be the new volume when the pressure changes to the following:
The kinetic energy of the ejected electron is given by 1/2 mv2= h v -?. where m and v are the mass and velocity of the electron
This solution was back-titrated with a 0.0440 M Ga3 solution until all the EDTA reacted, requiring 14.0 mL of the Ga3 solution. What was the original concentration of the V3 solution?
For the reaction shown below, Kp = 0.116 at 38.6 °C. Find the equilibrium partial pressures of ALL species if at the start of the reaction PCO = 1.17 atm and PCOBr2 = 1.4 atm
Nitrogen dioxide decomposes at 6.50 x 10-3 M s-1 during the reaction: 2NO2(g) --> 2NO(g) + O2(g) Answer the following questions:
Draw the molecule by placing atoms on the grid and connecting them with bonds. Show the formal charges of all atoms in the correct structure. Include all lone pairs of electrons.
(a) Calculate the standard molar enthalpy change (deltaHrxn°) at 400 K (not 298 K) for the following reaction (the cyclotrimerization of ethyne to benzene)
A sports beverage company is seeking an energy supplement to increase the performance of the athletes. An ongoing research project suggest the use of a tetrasaccharide with the following characteristics
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