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!
(a) Molecule X receives excitation as well as emits fluorescence. If the excitation wavelength is 320 nm, which of the subsequent could be the emission wavelength 270 nm, 290 nm, 320 nm, 350 nm? Explain your result.
(b) Explain how the following factors affect fluorescence quantum efficiency- increasing structural rigidity, decreasing temperature, rising sample concentration.
(c) Explain which method is more sensitive fluorescence or absorption spectroscopy? Define your result.
(d) Define the difference between fluorescence and phosphorescence.
Which solution should be the most acidic? 1) Zn(NO3)2(aq) 2) Cd(NO3)2(aq) 3) Ga(NO3)3 (aq) 4) Hg(NO3)2(aq) 5) Al(NO3)3(aq)
At what pH will an aqueous solution of 0.210 M Mn2+ begin to precipitate as Mn(OH)2 at 25 °C? The Ksp for Mn(OH)2 is 1.9 x 10-13
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
Trimethylamine (CH3)3N is a substance responsible in part for the smell of fish. it has a boiling point of 3.5 degrees c and a molecular weight of 59.1.
you take an unknown solution and measure 1ML of it into a flask. You dilute it with 25mL of water and 10mL of H2SO4. You titrate the solution with 19.80 mL of KMnO4. The (MnO4)- is reduced to (Mn) 2+ by the unknown solution.
What mass of sucrose (C12 H22 O11) should be combined with 522g of water to make a solution with an osmotic pressure of 8.55atm at 310K
a 40.0 ml volume of ethane gas is heated from 25.0 celcius to 50.0 celcius. If the pressure remains constant, what is the final volume?
1. al2so43 3bacl2 -gt 2alcl3 3baso4find the mass of al2so43 required given that 7.000 moles of baso4 are formed in
A 150.0 ml sample of an aqueous solution at 25*C contacins 15.2 mg of an unknown nonelectrolyte compound. if the solution has an osmotic pressure of 8.44 torr, what is the molar mass of the unknown compund
The Ksp of AgCl at 25oC is 1.0 x 10^-10. Calculate the concentrations fo Ag+ and Cl- in a saturated solution of AgCl, and the molar solubility of AgCl.
determine the volume of .450m napo4 is needed to precipitate all the leadii ions from 190.0ml of .550m leadii
the number of moles in .452 grams of naclo4 the number and type of particle in .452 grams of naclo4 is it possible for
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