Heterogeneous Catalyst: The Catalytic Converter Within the field of chemistry, catalysts are used to lower the activation energy (Ea) required in order to kick start a desired reaction. There are multiple ways scientists have been able to utilize this implementation into everyday life. There are three types of catalysts: heterogeneous and homogeneous catalysts as well as enzymes. The type of interest here is the heterogeneous catalyst. A heterogeneous catalyst is one that exists in a different phase as the reactants it is being introduced to. For example, a solid being introduced into a reaction that contains two different liquids and speeds up the reaction of those two liquids is considered a heterogeneous catalyst. A perfect example to evaluate in more depth is one that most of us use every single day. A catalytic converter is something that is required on the exhaust system of all present-day vehicles. It can be found attached to an exhaust pipe just as it comes out of the engine. Most common converters do exactly as the name refers, they catalyze chemical reactions that in short convert otherwise harmful chemicals to less harmful molecules to be released into the air. A typical converter consists of multiple sheets of platinum that carry out three important reactions. These platinum sheets act as heterogeneous catalysts in said reactions. Within the two primary reactions the catalyst is used as an oxidizing agent, adding oxygen to incoming molecules and releasing…
Foundations of Mythology
Feb 2, 2015
Foundations of Mythology
Merriam-Webster online dictionary (Merriam-Webster mobile search, n.d.) , describes a myth as, “a usually traditional story of ostensibly historical events that serves to unfold part of the world view of people or explain a practice, belief, or natural phenomenon”. A myth is perceived very differently depending on where a person lives their culture, values and lifestyle. In Western…
A Foundation is a nonprofit corporation with the goal and purpose of making grants to organizations and or institutions for educational, scientific and cultural purposes (http://grantspace.org). Many times, without foundations assistance, the nonprofits would have a difficult time achieving their mission, purpose and or vision. The Foundation Center maintains a database(s) of various private foundations known in the United States. According to the Foundation Center, Ewing Marion Kauffman Foundation…
convenience of doing it online with tax support preparation from experienced tax professional that will correct, review and even e-file your return. Other services that H & R offers is second look review, peace of mind and black live extended service plan, W-2 early access, tax audit support and even your own individual tax payer number for those that are not eligible for a social security number.
Normally a typical H & R Block an office will employee an Office Leader, Client Service Representatives, Administrative…
February 22, 2015
1.The story of the Trojan war was very significant to the Greeks. They thought it to be true, because it made them look victorious and saw it as a moment in time when all Greeks joined and banned together with a common goal, even though they were still unified in many ways . The Greeks enjoyed the performances of the strolling minstrels who sang the story immensely, particularly because the Greeks were portrayed as winning.
2.In the Iliad, the gods are…
Name: Shawn Talley
Exercise 10: Acid-Base Balance: Activity 2: Rebreathing Lab Report
Pre-lab Quiz Results
You scored 75% by answering 3 out of 4 questions correctly.
1. In cases of acidosis, the pH of the blood is
You correctly answered: c. less than 7.35.
2. Carbon dioxide and water form
Your answer : c. carbonic acid (a weak base).
Correct answer: a. carbonic acid (a weak acid).
3. Which of the following is true of respiratory acidosis?
You correctly answered: c. The amount of carbon dioxide in…
July 26, 2015
Many organizations work hard for the betterment of society. They sometimes with very limited resources provide much needed services for the community in which they serve. One such organization is The United Way of America.
What began in the latter part of the nineteenth century as a need to better coordinate the many local and overlapping charities created to help the poor, as well as, to apply a scientific…
Tell me about Blood Activity #2
1. The significance of a lower-than-normal hematocrit is it may mean you are anemic, which means the percentage of red blood cells is below the lower limits of normal for that person's age, sex, or specific condition, for example, pregnancy or high-altitude living.
b. The effect of a bacterial infection on the hematocrit is the red blood cell production would decrease, which decreases the RBC to whole blood volume, and…
child is using a microscope and also has a notebook in which apparently is taking notes on his experiment. In the bottom part of the picture is a skeleton and a shelf of books. Additionally there are words at the top of the image that said curiosity.
2) I think the article is about curiosity and how this leads to the discovery of new physical or chemical laws. I think this picture reflects that because it is a laboratory of science and therefore must be related to those topics.
3) I think the author…
Activity 2.7 MOD 2
Lisa M. Wondolowski
Embry-Riddle Aeronautical University
A major part of the study of labor law and collective bargaining is the unique vocabulary that has
developed over the period of time; accordingly, define the following terms and concepts:
a) Closed Shop - a collective bargaining clause requiring that a prospective employee be a
union member before employment. It is unlawful under federal labor law. (Fossum, 2012)
b) National Unions…