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Question- 1) Beta-carotene is one of the pigments tha cause carrots to look orange. how many nodes would the HOMO OF BETA-CAROTENE HAVE?
2) In acid-catalyzed rearrangements of 2,5-octadiene to 3,5-octadiene would you ecpect the UV maximum to shift to a longer or shorter wavelength?
3) The real benzene molecule is 36 kcal/mole more stable than the imaginary 1,3,5-cyclohexatriee.What de we call this 36 kcal/mole?
I need proficient help to working out this problem
What is the initial concentration (in M) when 15.3 mL of a potassium hydroxide solution was diluted with 15.1 mL of solvent to a final concentration of 0.561 M? Assume the volumes are additive.
when pcl5 solidifies it forms pcl4 cations and pcl6- anions. according to valence bond theory what hybrid orbitals are
Question- Show how the rates of each of the following reactions can be expressed in terms of the rates of disappearance of the reactants and the rates of appearance of the products
consider oxygen at 100 bar and specific volume of 0.08.a calculate the temperature t using the van der waals equation
Problem- Calculate the pH when 40.0 mL of .725 M solution of NaOH is added to 1.00 L of a solution that is 1.00M in sodium acetate and 1.00 M in acetic acid
exists for each of these chemical reaction types above and why might it be of importance to healthcare professionals?
Problem- For a first order reaction with an [A]o = 35 and a final concentration [A]t = 5 at 85.0 minutes, what is the rate constant for the reaction
What is the age of a rock whose 40Ar /40Kratio is 1.25? The half-life of 40 K is 1.28 times 10^9years Formulas ln(N)t/(N)o =-k+ + 1/2 =0.693 /k
The decomposition of hydrogen peroxide to gaseous O2 and water is a spontaneous process, yet H2O2 is stable for long periods of time. Explain
Write an equation for the formation of the salt that could be formed by reaction of one molecule of adipic acid with two molecules of ethylamine
Calculate the pH of this solution. recall that ascorbic acid is a diprotic acid. the first and second acid dissociation constants are 7.9X10^-5 and 1.6X10^-12.
A 3.46 g sample of zinc heated to 95.4 C was dropped into 50 g of water at 20.7 C in a calorimeter. The temperature rose to 21.2 C. What is the specific heat of zinc?
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