107 800
Assignments Done
100%
Successfully Done
In October 2024
In October 2024
Your physics assignments can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Physics
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Math
Our experts will gladly share their knowledge and help you with programming projects. Keep up with the world’s newest programming trends.
Programming
Answer to Question #95224 in General Chemistry for Fintan Casey
Question #95224
the work function for an unknown metal is -817kj mol. Will light with a wavelength of 110 nm trigger the photoelectric effect? If so, what is the velocity of the electron ejected? The mass of an electron is 9.11 x10-31 kg.
Expert's answer
Since here we have calculated velocity for a mole of electrons instead of single electron. So we need to make it for single electron.
Learn more about our help with Assignments: Chemistry
-
![Help me with my assignment!]()
Who Can Help Me with My Assignment
There are three certainties in this world: Death, Taxes and Homework Assignments. No matter where you study, and no matter…
-
![How to finish assignment]()
How to Finish Assignments When You Can’t
Crunch time is coming, deadlines need to be met, essays need to be submitted, and tests should be studied for.…
-
![Math Exams Study]()
How to Effectively Study for a Math Test
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
"assignmentexpert.com" is professional group of people in Math subjects! They did assignments in very high level of mathematical modelling in the best quality. Thanks a lot
#339914 on Dec 2023
#339914 on Dec 2023
Comments
Dear Fintan Casey Since here we have calculated velocity for a mole of electrons instead of single electron. So we need to make it for single electron.
In your last few steps, you wrote "Thus v2= 266 *103 * 2/m here m= 9.11 x10-31 kg. For 1 electron only v2= 266 *103 * 2/9.11 *10-31 *6.022*1023" From what I thought it should be 532KJ/mol -:- 9.11*10-31Kg I do not understand why you are using Avogadro's number once again and how you are cancelling out the units of KJ and Kg to receive the final units of m/s.
Leave a comment