Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
the particle on a ring is a useful model for the motion of electrons around the porphine ring (4). the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. We may treat the group as a circular ring of radius 440pm, with 20 electrons in the conjugation system moving along the perimeter of the ring. As in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (A) Calculate the energy and angular momentum of an electron in the highest occupied level.(B) Calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.
calculate the Kf for the solvent bromoform: When 28.2 g of C20H42 are dissolved in 173. mL of bromoform, the freezing point of the solution is 5.4 C.
Determine the amount of hydrochloric gas that should be bubbled into the buffer to triple hydronium ion concentration is closest to what?
In a molecule of H2S, the four electron groups around the sulfur atom are arranged in tetrahedral geometry. However, the shape of the molecule is bent. Why does the shape of the molecule have a different name from the name of the electron group ge..
A gaseous mixture of O2 and Kr has a density of 1.184 g/L at 385 torr and 300. K. What is the mole percent O2 in the mixture?
Find out the Kb of ammonia if the pH of a buffer formed by mixing 50.0 mL of 1.00 M NH 3 and 50.0 mL of 1.00 M ammonium nitrate?
What volume of the solution must be used to make 800 mL of 0.15 M. potassium permangate from a 0.20 M. potassium stock solution.
A buffer is made by mixing HCN and KCN to give a solution whose pH is 9.49. If the KCN molarity is 0.20 M, what is the molarity of the HCN?
Calculate the nuclear binding energy per mole of nuclei of and the binding energy per mole of nucleons for 31P. The required masses (g/mol) are: 1 1H = 1.00783; 1 0n = 1.00867; 31 15P = 30.97376
N2+O2->2NO At 2000 degress C, Kc for the reaction is 4.1*10^-4 and delta H= 180.6Kj. What is the value of Kc at 65 degrees C
A sample of nitrogen gas occupies a volume of 3.87 liters at 52.8 oC and 2.11 atm. What will the new temperature (in °C) when the volume increases to 4.55 liters and the pressure remains constant?
The density of lead is 11.3 g/mL. The water level in a graduated cylinder initially at 216 mL rises to 292 mL after a piece of lead is submerged. What is the mass in grams of the lead?
Estimate dissociation energy of HF using simpe additivity rule If given that d(H-H) and D(F-F) IN H 2 is 336kj/mol and F2 is 258 kj/mol
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd