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
This file of RES 320 Week 3 Discussion Question 2 consists of:
How do you know that your experimental research results can be generalized to the population?
What is the best experimental design to test the effectiveness of a new weight loss drug?
Sociology - General Sociology
RES 320 Entire Course / Foundations of Research
RES/320 Entire Course / Foundations of Research
RES320 Entire Course / Foundations of Research
University of Phoenix
Get plenty of sleep…
List of Figures
1.1 High Risk Activity on Site
1.2 Excavating Foundation Trenches
1.3 Erecting Roof Trusses
1.4 Demolition of two existing buildings
I have been employed by AV Construction as a Site Agent. I am currently in charge of a small site which comprises of 12 semi-detached two storey dwellings. There are 4 sub-contractors from a demolition company that will be demolishing the two existing buildings on site,…
volume and angle measurement.
I.1 designs constructs various rectangles of a given perimeter using natural numbers.
--demonstrates concretely, pictorially, and symbolically that many rectangles are possible for a given perimeter (SS-I.2.6)
Foundation Words: Perimeter, Rectangle, Measure, Area
Objective: The students will learn how to measure perimeter of rectangles.
Method: Have students draw a rectangle in their notebooks (any size). Have them measure eac h side of their rectangles and…
decline in the binge drinking practice, but it resurfaced to its previous rate from 2001 to the present time (Gealt, Gunter, Martin, O’Connell and Visher, 2010). This kind of activity, known as binge drinking, can be defined as the consumptions of five or more drinks in a row for a man and 4 or more drinks to a woman (Nemours Foundation, 2014).
A study conducted by the University of Delaware reveals alarming statistics about this habit (Gealt, Gunter, Martin, O’Connell and Visher, 2010). Statistics gathered…
PARRAMATTA MARIST HIGH SCHOOL
Yr 11 SOR MODULE 2 RUBRIC
Some eyecontact used; mainly refers
Stance may be inconsistent or
inappropriate to the presentation, may
use limited gestures.
Uses basic variety in tones within their
May use pause, voice projection and
stress in an attempt to engage the
Show selfdiscipline in their learning,
recognising the need to complete…
Walters Family Scholarship ($250)
Participation in 4-H Shooting Sports
McCrory Family Scholarship ($600)
Emphasis on leadership and community service
Joe Barrett Memorial Scholarship ($250)
Participation in 4-H Shooting Sports
Lod Cook ($500)
LA 4-H Foundation Parish Scholarship ($100)
American Legion ($500)
Agriculture major at a Louisiana University
Parish 4-H Scholarships
Kenneth anb Mary Beatty Memorial Scholarship ($1,200)
Must be from Webster or Bienville Parish
Beauregard CattleWomen Scholarship…
caffeine on brain development of a rat relative to that of adolescents.
2. The article states that they had a sample population of 28 male Sprague Dawley rats. The rats were 23- 25 days old; chosen at random.
3. The population could have consisted of male and female samples in order to better represent the broad teenager population.
4. Subjects were selected by their age. The rats had to be 23 to 25 days old with brain activity resembling the beginning of puberty in humans.
5. Yes there was a…
BA 458 Class Project
During this course you will learn the theory and practical application of project management and accepted guidelines and processes. To fully understand the application of this theory, it is important for students to receive practical experience in the actual planning and implementation of the PMBOK Initiating and Process Planning Groups; other Process Groups, and Knowledge Areas, will be addressed through lecture and demonstration. The class project is designed to give you…
2. Listener Relevance Link: What can you do as individuals to help improve our ecosystem? You can become a volunteer at The Surfrider Foundation. 3. Speaker Credibility Link: I’ve taken it upon myself to join the The Surfrider Foundation and put…
The Early Years Foundation Stage (EYFS) sets the standards for learning, development and care for children from birth to five years and is a mandatory framework for all early years’ providers from 1st September 2012.
These standards are set to promote a flying start for each child at a young age and to give children “the broad range of knowledge and skills that provide the right foundation for good future progress through school and life.” (EYFS Introduction II. Pg.2). The EYFS curriculum…