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What are the characteristic absorption regions for a) carbonyl groups and b) alcohols (RO-H), Are these absorptions a result of stretching vibrations or bending vibrations
What region of IR spectrum (give a range in wave numbers) is most useful for distinguishing between isomers that contain the same functional groups
What are the advantages of Attenuated Total Reflectance (ATR) sampling in IR over Beam Through Sample sampling
The streams are labeled as follows: 3 - boiler to turbine 1; 4 - turbine to reheat; 5 - reheat to turbine 2; 6 turbine to condenser; 7 condenser to pump; 8 pump to boiler. Determine the following
The Wittig reaction involves coupling between a phosphonium ylide and a carbonyl-containing molecule. If a chemist wants to use the Wittig reaction to synthesize 3-methyl-3-hexene, which reactants s
A certain reaction has an activation energy of 61.0 kJ/mol and a frequency factor of A1 = 2.00×10^12M^-1s^-1. What is the rate constant, k, of this reaction at 29.0 degrees celsius
A light of 655 nm is shone onto a metal surface and transfers some of its momentum to the metal. Will the reflecting light have a wavelength greater or less than 655
Into how many tubes can you dispense 450microliters of buffer using a micropipette set at 2.5 microliters
If you dissolved 0.95g of salt in 100ml distilled water, what is the concentration of salt in this solution in g/ml
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 2-bromobutane. Draw the organic product resulting from using these chemicals in the Wittig reaction.
The standard free energy of activation of a reaction A is 88.3 kJ mol-1 (21.1 kcal mol-1) at 298 K. Reaction B is one hundred million times faster than reaction A at the same temperature.
what is the value of 8.16612667E-008 and 4.6957301E-009? also, how do you write these numbers in scientific notation: -0.0109708572, 0.00274273724, and -10970857.2
What is the mole fraction of each component if 3.9 g of benzene (C6H6) is dissolved in 4.6. Assuming that this mixture is ideal, that is, it follows Raoult's Law, what is the partial vapor pressure
What are the concentrations of acetic acid and sodium acetate in a 0.4 M acetate buffer, pH 5.2. The pKa of acetic acid is 4.77.
Calculate the pH of a solution prepared by mixing 300 mL of 0.25 M sodium hydrogen ascorbate and 150 mL of 0.2 M HCl plus water to a final volume of one liter. The Ka of ascorbic acid is 5 x 10-5.
The bulb of the thermometer placed at the head of a distillation apparatus should be adjacent to the condenser. Explain the effects on the temperature recorded if the thermometer were placed (a) bel
Why is the ability to separate 2 liquids by fractional distillation drastically reduced if heat is applied too rapidly to the distillation flask
Making plastic drinking bottles for bottled water requires about 58 million barrels of oils per year (2007). In 2007, 300 million people averaged 114 L of bottled water per person. The average cost
Vitamin C, Molar mass 176.12 g/mol, is a compound of C, H, and O, and found in many natural sources, especially citrus fruits. When 1.000 g sample of vitamin C is burned in a combustion apparatus, t
What is the final temperature of the mixture if the heat of acid-base neutralization (?Hneut) = ?57 kJ per mole of H2O formed
The specific heat capacity of the solution produced was 4.20 J/g•°C, and final temperature reached was 34.91°C. How much heat was produced by the dissolution
When 1.0 g of snack cake is combusted in a constant-pressure bomb calorimeter with a heat capacity (including its water) of 10.0 kJ/°C, the temperature of the calorimeter rises by 2.24°C. Ho
A 70.0 g piece of metal at 22.0°C is placed in 100.0 g of water at 80.0°C in a coffee cup calorimeter (with negligible heat capacity), and the metal and water come to the same temperature at
A 0.9161 g sample which contained monoprotic lactic acid, was dissolved in 75.0 ml of water and titrated to the equivalence point with 32.25 ml of a 0.1057 m NaOH solution.