Name two properties of this polymer. e) Name two uses for this type of polymer. 4. a) What is addition polymerisation? b) Polyethylene is an example of an addition polymer. Describe what happens to the ethene molecule during this process. c) The mechanism of addition polymerisation consists of three steps. Name each step and give a brief description of each. 5. a) What is condensation polymerisation? b) Where is condensation polymerisation
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BCR: Which Towel? A student asks a testable question: “Which brand of paper towel absorbs the greatest volume of water?” Design an investigation to provide an answer for the student. Be sure to include • the materials needed. • a numbered procedure. • the independent and dependent variables. • important data that will answer the question. • ways to help ensure the accuracy of the results. Materials: Several paper towels‚ a flat dish‚ bottled water‚ a thermometer‚ a tong
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Introduction: An oxygen sensor‚ or lambda sensor‚ is an electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed. It was developed by Robert Bosch GmbH during the late 1960s under supervision by Dr. Günter Bauman. The original sensing element is made with a thimble-shaped zirconia ceramic coated on both the exhaust and reference sides with a thin layer of platinum and comes in both heated and unheated forms. The most common application is to measure the
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The Respiratory System: Gas Exchange 1. The atmosphere is a mixture of gases. Write down the percentages for: a. O2 _____21%______ b. CO2 ____0.04%_______ c. N2 _____78%______ d. H2O _____0.46%______ 2. Calculate the partial pressures of the following gases at both atmospheric pressures: 760 mmHg 747 mmHg a. O2 __159.6mmHg_________ ____156.9mmHg_______ b. CO2 ___.3mmHg________ _____.3mmHg______ c. N2 ____597mmHg_______ ______587mmHg_____
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‘heme’. The ‘heme’ group contains one atom of iron (Fe²+) and it is this iron that the oxygen molecule combines itself to. As there are four of the iron molecules in the haemoglobin this shows that a maximum of four oxygen molecules can be carried by the haemoglobin at anytime. For simplicity the equation of the reaction of haemoglobin and oxygen is written as a single polypeptide ‘heme’ chain reacting with oxygen: O2 + Hb ↔ HbO2 . The reactions of the four subunits occur in a consecutive manner‚ with
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physiological effects of exercise on the human respiratory system and cardiovascular system. To begin with‚ I will explain the two systems‚ their specific functions and how they inter-relate. I will then go on to analyse the effects of exercise on the two systems by looking at the way in which the body deals with an increased workload‚ and any health issues that may affect this. Cardiovascular system This system is responsible for pumping blood and oxygen around the body. It is a network made up of
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1. Explain how the respiratory and circulatory systems coordinate the supply and transport of oxygen to the cells and removal of carbon dioxide from the blood. (10 Marks) Paragraph 1: What happens in the respiratory system? Respiratory System: Coordinating the Supply and transport of Oxygen * Oxygen is inhaled through the nose or mouth * Travels down through the Pharynx * Travels down the Larynx * Reaches the lungs and goes through the Bronchi * Through the Bronchioles
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2011 Respiratory Diseases: Infections Invading the Lungs The average human takes breathing for granted. One might think that breathing is just an involuntary movement‚ but for the millions of people who suffer from respiratory illnesses‚ each and every breath is a major accomplishment to another day of daily life. The respiratory system not only oxygenates the blood for the body‚ but also filters out wastes‚ infections‚ and provides the air that is needed for daily speech. The respiratory system
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Oxygen sensor invention could benefit fisheries to breweries | MSU News... 1 of 1 http://news.msu.edu/story/9168/ News Site Oxygen sensor invention could benefit fisheries to breweries Contact: Layne Cameron‚ University Relations‚ Office: (517) 353-8819‚ Cell: (765) 748-4827‚ layne.cameron@ur.msu.edu Published: April 04‚ 2011 E-m ail Editor ShareThis EAST LANSING‚ Mich. — Monitoring oxygen levels in water has applications for oil spills‚ fish farming‚ brewing beer and more
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properties of an element and cannot be broken down into smaller parts. Molecules are formed when two or more atoms are combined. This formation can happen in a variety of ways. When two oxygen atoms join O2 is formed‚ and when three oxygen atoms join O3 or ozone is formed. Both of these have different properties. Different atoms can also combine to form molecules. Hydrogen combines with sulfur to form H2S and hydrogen and oxygen also combine to form H2O. Dmitri Mendeleev’s Periodic table is
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