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Only 2% of the light at a wavelength of 555 nm is able to pass through a 1 cm thick sample of lime Jello prepared on Monday. Twice that amount of light is able to pass through the same thickness of lime jello prepared on Tuesday. What is the relative concentration of the food dye that gives rise to the green color in Monday's dessert compared to Tuesday's dessert.
Perkin and related reactions, There are numerous condensations that are closely related to the Perkin reaction
At equilibrium the pressure of NH3 (g) is 1.23 atm. NH4Cl (s) ---> NH3 (g) + HCl (g) Find the equilibrium constant Ka for the reaction
Which of the following types of radiation is composed of particles with a charge and mass identical to that of an electron?
An experiment was performed to determine the solubility and the solubility product constant of gallic acid, a monoprotic organic acid (gmm=170.12). The equilibrium involved is: C6H5O3COOH(s) C6H5O3COO-(aq) + H+(aq)
A chemist needs to determine the concentration of a solution of nitric acid, HNO_3. She puts 865 mL of the acid in a flask along with a few drops of indicator.
Use the Nernst equation and data from Appendix D to calculate Ecell for each of the following cells. Enter your answer with 3 significant digits. Enter scientific notation as 1.23E4.
A twofold increase in the initial concentration of A leads to a 1.41-fold increase in the initial rate. what is reaction order
A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 3.585-g sample of the powder was dissolved in HNO3 and heated to convert all iron to Fe3
At 25 c the ion product of water, Kw is 1.9 x 10^-14. What is the concentration of hydroxide ions in a solution where the concentration of hydrogen is found to be 5.0 x 10^-15 mol dm^-3.
A solution containing 0.0837 M caffeine and 0.0666 M niacin as the internal standard gave R = 423 and R = 347. To analyze a caffeine tablet, 20.0 mL caff niacin 0.146 M niacin and 20.0 mL of caffeine tablet solution were mixed
Identify the largest heat of combustion, small heat of combustion and highest boiling point for: heptane(i), 3-methylhexane(ii), nonane(iii)
the bond dissociation energy is the amount of energy required to break a bond? chose your answer from the followings? (a) homolytically (b) heterolytically (c) so as to produce the more stable pair of ions (d) via hydrogenation (e) none of the abov..
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