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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
Fluorine-18, which has a half-life of 110 min, is used in PET scans. (see section 4.5.) If 100 mg of fluorine-18 is shipped at 8 A.M., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:..
Write a balanced chemical reaction for the reduction of dissolved copper ion by Zn (s) to copper metal
How many moles of NO are formed from the reaction of 1 mol NH3. If the feed going to the reactor contains (0.430 mol NH3/mol O2), what is the limiting reactant, and the percent excess of the other reactant
the specific heat capacity of silver is 0.235 jgmiddotk. its melting point is 962degc and its heat of fusion is 11.3
The wavelength corresponding to the threshold frequency to tungsten surface is 230nm. Calculate the kinetic energy of the photoelectron ejected from the surface of tungsten metal.
The entry of Na+ provides a free energy input of 10.8 kJ/mol under typical cellular conditions (external [Na+]= 143 mM, internal [Na+] = 14 mM, and membrane potential -50 mV (outside negative relative to inside)) How large a concentration of gluco..
Complete and balance the following neutralization reaction, name the products, and write the net ionic equation.
What are q and w (in kJ) for the reaction of 53.0 g of Na(s) and 48.0 g of Cl2(g) to produce NaCl(s) at 1 atm and 298K
What amount of energy is required to completely ionize 6.2 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole?
If we react 116 molecules of TiCl4 with water according to the equation TiCl4 + 2 H2O -> TiO2 + 4 HCl how many molecules of HCl will we form?
according to the ideal gas law a 10.0 mol sample of methane gas in a 0.815 l container at 503 k should exert a pressure
Compute the number of mill moles in 500 mg of each of the following amino acids: alanine (MW=89), leucine (131), tryptophan (204), cysteine (121), and glutamic acid (147).
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