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Calculate porphyrin molecule lowest energy absorption if length of molecule is 1000 pm as approximated by porphyrin molecule being planar and the pi electrons being confined inside a square
Write the rate expression for the reaction C) Calculate k for the reaction D) When [S2O8 2-] = 0.105 M and [I-] = 0.0875 M, what is the rate of the reaction at the temperature of the experiment?
Calculate the molecular weight of a polymer if a 100 mL solution of 6.5 grams of the polymer in toluene has an osmotic pressure of 0.044 atm at 27 celsius
Which best describes a solid?
Consider the reaction Cu2S + O2 → 2Cu + SO2. If 55.0 grams of Cu2S is heated in excess O2, what is the mass of Cu that can be produced?
It takes 49.0 J to raise the temperature of a 9.60 g piece of unknown metal from 13.0 degrees celsius to 24.5 degrees celsius. what is the specific heat for the metal?
An electron in the n = 7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 93.1 nm. What is the value of n for the level to which the electron relaxed
An unknown compound with a molecular formula of C8H18 reacts with chlorine in the presence of light and heat. From the reaction, only one compound with the formula C8H17Cl can be isolated. What is the structure of the original unknown compound?
Write the concentration of cations in mEq/L and total the concentration of cations in the solutions. Repeat for anions.
how many grams of sucrose c12h22o11 must be added to 589 g of water to give a solution with a vapor pressure 0.933 mmhg
Could you compare acidity stability and reactivity of the Carboxylic acid Aldehyde and Ketone with the explanation
converting liquid water to solid ice releases 1.44 kcal/mol.
An electron spin can adopt either of two orientations in a magnetic field, and its energies are ±?BB, where ?B is the Bohr magneton. Deduce an expression for the partition function and mean energy of the electron and sketch the variation of the fu..
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