Chem Lab 1

Monday, October 14, 2011
Chemistry II

Purpose: The purpose of this lab was to
Hypothesis: By obtaining the accurate measurements for the ideal gas law I lead be able to determine the molar mass of the unnoticeable semiliquid.
Introduction: In this experiment, the molar mass of the volatile entire liquid will be determined. A volatile liquid is an unstable liquid that evaporates quickly.
PV=nRT
The ideal gas law flock be used to solve for any of the variables, R is the ceaseless so it could not be solved for. It will evermore be .0821. You dont need to solve for obligate because it is given. To find out the temperature, measure how hot the boiling piss is. To find out the volume, measure in a graduated cylinder how much body of water the flask holds. Finally, rearrange the equivalence to solve for moles.
Procedure: The materials were obtained. A 250 mL Erlenmeyer flask with an have stopcock fictionalisation was fill up with 5 mL of a liquid sample. The flask was whence placed directly onto a hotplate until the liquid sample evaporated and there was no ejection seat left on the neck of the flask. Once this happened, the flask was then removed from the hotplate and placed under cold trail water until the vapors inside condensed into a liquid. When the flask was alone cool offed, the stopcock was closed with a clamp and removed from the cool running water. The flask was then dried off and weighed. A sharpie marker was then used to make a mark on the flask where the rubber stopper ended.



After, the stopcock assembly was removed and the flask was rinsed out. The flask was then filled with water up to the sharpie mark and the stopcock assembly was placed back on the flask. This was then weighed and then the water was poured out. The entire process was then repeated once more.
selective information:
Table 1. Mass of empty flask and pinchclip
|Trial keep down |Mass |
|1...If you want to get a full essay, rewrite it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .

Cerebral Aneurysm

What is Cerebral Aneurysm?

A noetic aneurism is a weak or thin spot on a blood vessel in the brain that balloons out and fills with blood.  The pouch aneurysm can put pressure on a nerve or surrounding brain tissue.  It may also leak or buck, spilling blood into the surrounding tissue. Some cerebral aneurysms, particularly those that are very small, do not eject or cause other problems.  Cerebral aneurysms can happen anywhere in the brain, but most are regain along a loop of arteries that run between the derriere of the brain and the base of the skull. Cerebral aneurysms are also to a greater extent common in people with certain genetic maladys, such as connective tissue disorders and polycystic kidney disease, and certain circulatory disorders. I chose this disease because I had a friend that had it and told me about his disease and I thought it was very interesting and I wanted to share to everyone about this disease.

[pic]

Symptoms

Aneurysms usually cause no symptoms unless they rupture and cause bleeding into the brain. Often, an aneurysm is found when a CT scan or MRI is performed for another reason. Symptoms occur if the aneurysm pushes on nearby buildings in the brain.

Symptoms depend on what structure the aneurysm pushes on, but may include, Double vision, Loss of vision, Headaches, nub pain, Neck pain.




A sudden, severe headache (often described as the worst headache of your life) is one symptom that an aneurysm has ruptured. Other symptoms of an aneurysm rupture may include:
Confusion, lethargy, sleepiness, or stupor
. Eyelid drooping
. Headaches with nausea or vomiting
. Muscle weakness or difficulty moving any part of the body
. Numbness or decreased sensation in any part of the body
. Seizures
. Slow, sluggish, foggy movement
. Speech impairment
. Stiff neck (occasionally)
. Sudden onset of irritability, impulsivity, or poor temper control
. Vision changes (double vision,...If you want to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .

Catalysis In Petrochemical Industries

Catalysts in Petrochemical Industries
Dr. Anil Lachke
anil.lachke@gmail.com
Ex-Senior Scientist National Chemical laboratory (CSIR), Pune 411008
12-A Divyakunj Apartments, Gokhale Road, Pune 411 016

Index
1. Catalysis
2. Indian Catalysis Research
3. Mitti ka Tel (Petroleum, Crude oil)
4. In search of oil (Background)
5. archaean Drilling
6. Production of Petrochemicals with Catalysts
7. Some Notable Facts
Catalysis
interpersonal chemistry is the science of substances and their transformations. Chemistry makes many wonderful substances from animals and vegetables as well as from earthy oil as a raw material. Some substances expire natur onlyy, but many have to be chemically treated in some way to make them suitable for our particular proposition needs. . Thousands of substances have been produced that are not easily found in nature but posses unique and useful properties. The list of chemistrys good deeds is practically inexhaustible. Chemistry feeds us, uniform us, shoes us, and gives us the things without which modern civilized society cannot function. In order to get unique substances, two or more than chemicals must come together and react! After all weve all seen images of chemists cooking things up.



May be weve even moody up the flame a few times ourselves in the kitchen! And so we know that in order to speed up chemical reactions, high temperature certainly helps. If you wish to have an economical and ecofriendly approach towards your chemical transformations then you should use an appropriate particle accelerator. Catalysts dislodge the reaction rate of chemical reactions favourably without undergoing any fixed change themselves.
Any chemical reaction that takes place with the fear of a catalyst is called a catalytic reaction. For example, warmth a mixture of potassium chlorate and manganese dioxide produces oxygen quicker than heating potassium chlorate on its own. The manganese dioxide acts as a catalyst to speed up the reaction, and is left unchanged at the...If you essential to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .

Carbon Dioxide

Diadem de Guzman
January 05, 2011
Chemistry

* Fossil Fuels- are fuels formed by inbred resources much(prenominal) as anaerobic decomposition of buried on the spur of the moment organisms. The age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years.
* aqueous Solution- a outcome in water. A homogeneous solution of particles dissolved in water.
* Brønsted Base- any molecular entity undefended of carrying a proton from an acid. A substance that can accept protons.
* Limestone- a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals. A sedimentary rock peaceful largely of the mineral calcite (calcium change: CaCO3). Like most early(a) sedimentary rocks, limestones are composed of grains, however, around 80-90% of limestone grains are emaciated fragments of marine organisms such as coral or foraminifera.
* Perchloroethylene- as well known under its systematic name tetrachloroethene and many new(prenominal) names, is a chlorocarbon with the formula Cl2C=CCl2. It is a colourless liquid wide used for dry cleaning of fabrics; hence it is sometimes called dry-cleaning fluid. A non-combustible solvent commonly used in dry cleaning.





I have learned that carbon dioxide is released into our strain when carbon-containing fossil fuels such as oil, natural gas, and coal are burned in air. Over the past century, the amount of carbon dioxide in the atmosphere has change magnitude as a result of fossil fuels. The major(ip) changes in global climate could result from a increased of the amount of carbon dioxide in the atmosphere. Carbon dioxide also dissolves in the water of the oceans. Carbon dioxide exists in many forms, it dissolves. carbonate anion interacts with cations in seawater. Carbonate ions cause the
precipitation of certain ions. Calcium carbonate is one of the main constituent of marble, chalk, pearls, coral reefs, and clam shells. Carbonate ions accept hydrogen ions from carbonic...If you want to get a entire essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .

Cad/Cam Course Outline

HITEC UNIVERSITY DEPARTMENT OF MECHANICAL ENGINEERING

ME-404 FALL SEMESTER 2012 COMPUTER AIDED radiation diagram / COMPUTER AIDED MANUFACTURING COURSE SYLLABUS INSTRUCTOR: service Professor Tanveer Ahmed Office: Mechanical Engineering department telecommunicate: tanveermohad@yahoo.com As per time table

CLASS HOURS:

PREF. CONTACT: By telecommunicate I will generally send messages and lecture notes to you by email several times a week. Please bar your email at least once a day. You whitethorn also send your questions/queries by email. Responding to questions in a exact form through email is more convenient for me.
neutral: This course is focused on new harvest-feast soma. By the end of the course, you should be able to apply many of the design tools used by the industry to generate new product design. Because design and manufacturing are closely connected, we are also sacking to look at some of the manufacturing concepts that are current in industry.



The course will



Familiarize the participants with current design fundamentals vex the computer aided design and computer aided manufacturing fetch the on-going useful manufacturing concepts and their usage Provide the useful tools for automation apologise the concept of computer integrated manufacturing and cooccurring applied science

COURSE military posture: Redefines Product Design Fundamentals Covers all aspects of computer in industrial manufacturing Bridges the gap between Design and Manufacturing very useful for designers as well as other professionals Presents concurrent engineering approach in computer aided engineering environment PREREQUISTES: COURSE NOTES: Understanding with Engineering Softwares e.g. Auto hotdog, ProE etc Course Notes: These include lecture presentations, as well as some other readings. The course lectures will be emailed before the scheduled lectures every week. I will suggest that you urinate the printouts and scan them before coming for the class.
Page 1

[CAD / CAM]

TEXTBOOK:

CAD /...If you want to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .

Beer Quality

Beer is a complex mixture of a diverse hunt down of components in an acidic medium. in that respect was an increasing demand in the quality of beer and longer shelf lives. There are quaternion aspects of beer stability: the change in beer piquancy, the loss of foam stability, the arrangement of particles and microbial contamination.

Beer Flavour
As the beer was kept for a period of time, the intuitive feeling wills changes. Thus there was a need to maintain extravagantly and consistent quality of beer. The savour changes might be payable to the chemical changes that occurred. It is the formation of flavour-active components which is of immediate concern from a flavour stability perspective So for example, the formation of trans-2-nonenal via trace lipoid oxidation is primarily a flavour stability hassle because it has a flavour threshold of around 100 (700 pM). There are several possible routes to flavour-active breakdown products in beer much(prenominal) as the detrimental role of type O on beer flavour stability.

Potential Sources of Flavour Instability
The Role of Oxygen
Oxidative degradation of beer is by and large considered to be the major source of beer flavour instability. Thus the assert of oxygen in the brewing process has long been a preoccupation for brewers. Oxygen itself is not particularly thermolabile, existing as a triplet ground state.



However, it can be mad by a number of agents, such as change metal ions (e.g.copper. iron), enzymes, photosensitisers and light, to give singlet oxygen. This is a much more than reactive compound, and is the precursor to a family of so-called reactive oxygen species (ROS). Thus, although the hydroxyl radical is generally much more reactive than the hydroperoxyl radical, the former will react with less specificity than the latter, so that it is potentially a less effective flavour-destabilising agent.

Beer rapidly reacts with any molecular oxygen to which it is exposed, so for most mainstream beers, after the end of fermentation, it is significant to minimize any...If you want to get a full essay, smart set it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .

Babys

Sammie Howard
Lydia Gill
Sam Fadel
Tim Denfeld
Advanced Composition
Killingbeck
March 19, 2012

Genetic Testing in Human Beings

What if, by altering an embryos ancestral makeup, the perfect ball up could be created? If people did this, what would society become? During the last some decades, research in genetic engineering has been advancing at immense speeds. We are manipulating the basic instructions that govern intent on Earth, yet our fellowship of how genes are incorporated into hierarchies of presidency and function remains spotty and incomplete (Suzuki). No nonpareil scientist truly knows the effects that are faced by these tests, making it demanding for the general public to accept the complications. The thoughts of genetically modifying the human go to increase their well-being and to treat traumatic illnesses are proper a reality. However, within the last few years, newfound knowledge in genetics may allow scientists to engineer new, customizable genetic makeups to certain aptitudes and character traits. These traits include everything from personality traits to all physiologic traits. The expense of the testing goes farther than monetary payments, it would furthermore cause stress to families, societies, and the children themselves. The ethical question of is this okay?



is being brought up to find out if the money toward testing is worth the suffering. The filling of being able to genetically enhance physical and physiological traits is ethically wrong and unfair.
New advances in knowledge and science have become especially discriminatory against people they gestate are imperfect. Technology is quickly advancing toward creating genetically intensify children and eliminating the genetically unfit beings (Genetic Engineering). Pre-implantation Genetic Diagnosis gives parents the ability to mask and select genetic traits in their unborn child, for example: newsworthiness level, athletic ability, musical talent, and even personality type...If you want to baffle a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .