Chem 17 Reviewer (1st Exam)

All standardizations are performed in triplicate. Weigh out .1000-.1200 gram KIO3. Add 70-80 mL of deionized water. Swirl and dissolve. Add 3 mL of 6M HCl. Swirl and mix. Quickly titrated the brow-red solution with 0.1M Na2S2O3 until it is light yellow. Then add 3.5 mL of starch indicator. Titrate again until the dark color first disappears.

We know that that the end point of the titration is reached when, after drop after careful drop of NaOH, the solution in the flask retains its pale pink color while swirling for about 30

Electromagnetic Radiation – A form of energy composed of waves of electric and magnetic changes (from electrically charged particles). It deals with

pH was recorded every time 1.00 mL of NaOH was added to beaker. When the amount of NaOH added to the beaker was about 5.00 mL away from the expected end point, NaOH was added very slowly. Approximately 0.20 mL of NaOH was added until the pH made a jump. The pH was recorded until it reached ~12. This was repeated two more times. The pKa of each trial are determined using the graphs made on excel.

Heisenberg realized that the uncertainty relations had profound implications. Heisenberg set himself to the task of finding the new quantum mechanics to explain what his theories observed. He relied on what can be observed, namely the light emitted and absorbed by the atoms. By July 1925, Heisenberg wrote his answer in a paper. The basic idea of Heisenberg's paper was to get rid of the orbits in atoms and to arrive at new mechanical equations. Heisenberg’s approached focused mainly on the particle nature of electrons. The mathematics Heisenberg used were tables commonly used for multiplication of arrays of numbers-mathematical objects known as matrices. Using the mathematics of matrices, scientists had at last a new mechanics for calculating the quantum behavior of particles. Heisenberg, and others showed that the new quantum mechanics could account for many of the properties of atoms and atomic events.

Gamma: this is a ray of electric radiations this is a part of electromagnetic spectrum. In the high energy and low wave frequency part. When ionising gamma rays pass through gamma because they are weak, travel through space and vacuum.

Radiation is one of the main forms of energy (Pettigrew 1). In today’s environment we are only familiar with the basic types of radiation. These types are in the form of

Radioactivity is when energy is emitted from the nucleus due to the nucleus being unstable. The 3 types of radiation are Alpha ,Beta and gamma. Alpha particles have 2 protons and two neutrons. Examples of radioactive nuclei that emit alpha radiation. Are : uranium, thorium, actinium, and radium They are very ionising so they give energy off onto whatever they are in contact with. Therefore, it loses energy more quickly. They are not very penetrating so can be stopped by a piece of paper or skin. Beta particles have 1

Received a call from Pete they were unable to print from their Canon ImageRunner 1025IF printer. Connected into his computer and found the printer was showing as offline. Running and advanced IP scanner we found the printer IP address of 192.168.1.200, which was within the scope, was taking by a phone. Removed the IP from DHCP and called Charles and had him power cycle the printer. I was still unable to access the printer. Called and walked Chris through checking the IP address configurations on the printer which was set to 192.168.1.168, which was also within the scope, checked IP address on the network and found an android phone had the IP address. Removed the phone and had Chris reboot the printer, but I was still unable to access the printer.

As the first written assignment (due January 22, 2016) for the Junior Chemical Engineering Lab (CHE 352) taught by Professor Burrows, I will be endeavoring to provide a superior reflection of my personal standards and assignment quality. Although this assignment will be submitted to Professor Burrows, the individual that this assignment will benefit the most is me. This work will allow me to focus on data research, data analysis, professional writing skills, and advance my knowledge concerning the technical requirements of this course; thus, directing me towards a higher level of professional document writing and presentation. Through completion of this assignment, the guidelines of Professor Burrows will prepare me intellectually for the challenges of future written projects in this course, thus making my material easier to read and evaluate.

Trish, could you please order 1 Duracell AA batteries, pack of 24 item# 458914 (billed to ARC), 1 Duracell AAA batteries, pack of 20 item# 587526 (billed to ARC), 1 Office Depot Cleaning Duster, pack of 3 item# 911245 (billed to ARC), and 1 Memorex CD/DVD sleeves, pack of 100 item# 646510 (billed to ARC).

Referring back to the statistics on password length in section 3.1.5 for rockyou.com, attacker one would be able to crack all passwords less than eight characters being 33.00% of users in little over an hour. Since 26.00% of the users from the website used only lower alpha passwords and 2.76% used only mixed alphanumeric passwords, the results differ tremendously if attacker one only covered this character set on the 28.76% of users.

Before Rutherford’s Geiger-Marsden experiment the most popular model of the atom was the “plum pudding model” developed in 1904 by the person who also discovered the electron in 1897, J.J. Thompson. It was the most common model of the atom and stated that electrons (plum) floated around with

Prior to the research of JJ Thomson and Ernest Rutherford a theory pertaining to atoms and a model was already created. A scientist named John Dalton performed experiments using chemicals that showed elementary particles that were later discovered to be atoms. Which led to the creation of his theory that everything is made of atoms and that atoms were the smallest form of matter. This was investigated overtime as scientists investigated elements and connected between the two. The discoveries found led to technological methods which were inventions created to find information about atoms that both JJ Thompson and Ernest Rutherford later used to prove and disprove their theories. The most important invention being the cathode ray tube which show rays were traveling in straight lines and an electric charge that passed from the tube to the wires demonstrated by the glow on the walls of the tube. This information became the basis for both JJ Thomson and Ernest

The potential for light to perform work is called light energy. (Light Energy Facts. (n.d.)). Light energy is the only form of energy that we can actually see directly. (Light Energy Facts. (n.d.)). It is formed through chemical, radiation, and mechanical means. (Light Energy Facts. (n.d.)). Light energy can also be converted into other forms of energy. (Light Energy Facts. (n.d.)). Light consists of photons, which are essentially tiny packets of energy. (Light Energy Facts. (n.d.)). When an object's atoms heat up, this results in the production of photons and is how photon production occurs in most cases. (Light Energy Facts. (n.d.)). The electrons in atoms find excitement from the heat, which results in them earning extra energy. (Light Energy