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CH110/120 Assignment #4 Version A General Instructions Specific Assignment Instructions:   Your student number has nine digits: 123456789

Chemistry

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CH110/120 Assignment #4 Version A General Instructions

Specific Assignment Instructions:

 

1. Your student number has nine digits: 123456789. Replace the numbers that are bolded and highlighted in yellow with the corresponding value from your student number. For example, if your student number is 009820864, then:

 

0.123 mol/L = 0.009 mol/L (this means that 1, 2 and 3 refer to the 1^st, 2^nd, and 3^rd digits in your student number)

0.456 mol/L = 0.820 mol/L (this means that 4, 5 and 6 refer to the 4^th, 5^th, and 6^th digits in your student number)

7.89 x 10² mL = 8.64 x 10² mL (this means that 7, 8 and 9 refer to the 7^th, 8^th, and 9^th digits in your student

                                                                                                                                                                                                                     number)

If you do not understand this instruction, email your instructor with your student number and the version of your assignment, and your course instructor with clarify these requirements.

 

2. For Q1, you are expected to identify at least four problem solving strategies used in arriving at your answer. You can find problem solving strategies on slides 6-8 from “Directions_for_Groupwork_and

_Problem_Solving”, under Course Information on MyLS. You are not required to do this for Q2.

 

3. For Q1 you are required to identify a relevant course learning outcome. These can be found at the end of your syllabus. Please do not make up your own learning outcomes. You are not required to do this for Q2.

 

4. At the end of your assignment, you must rewrite and sign the Academic Integrity Pledge.

 

 

 

Q1) When a metal was exposed to light with a wavelength of 56.7 nm, electrons were emitted with a kinetic energy of 1.23 x 10^-19 J.

What is the maximum number of electrons that could be ejected from this metal if a 100.0 W light with this wavelength shines on the surface for 3.00 seconds?

Your student number
Problem solving strategy	Problem solving
State one course learning outcome achieved from this activity.

Q1=4 points                                                                                                   Insert extra pages if required.

 

 

Q2=2.5 points                                                                        Student number:

 

Q2) The d-block consists of ten columns. Match the 7^th digit of your student number to the corresponding column (zero corresponds to the 10^th column). For the fifth-row d-block element:

 

1. write out the equation that corresponds to the 5^th ionization. Be sure to include phases. You do not need to include the ionization energy.

 

2. Write out the equation that corresponds to the first electron affinity process. Be sure to include phases. You do not need to include the electron affinity energy.

 

3. For the resulting ions, use a Nobel gas core to represent the core electrons and an orbital diagram to represent the electron configuration of the valence electrons. Clearly label your orbital diagram.

 

4. State if each ion is paramagnetic or diamagnetic.

 

5. Write no more than two sentences to explain which ion will have the largest radius. Use the term “Z_eff” at least once in your explanation.

 

(a) I5
(b) EA1
(c) Electron configuration for (a)’s ion		Circle one; cross out the other:   Paramagnetic     Diamagnetic
(c) Electron configuration for (b)’s ion		Circle one; cross out the other:   Paramagnetic       Diamagnetic
(e) Which has the largest radius and why?

 

 

 

 

Integrity Pledge

“I affirm that I have not given or received any unauthorized help on this assignment, and that this work is my own.”

Rewrite (do not rephrase) the above statement in the following box and then sign and date below.