gas welding‚ and resistance welding. 1) Arc welding: Heat is generated by an electric arc and the parts are simply fused together and became one. In some cases electrode is used that provides a filler material. 2) Gas welding: The burning gas (oxygen and acetylene) raises the temperature of the part to be joined and a welding rod provides filler material. 3) Resistance welding: The parts that are to be welded‚ while being forced together by mechanical pressure‚ are raised to the temperature
Premium Welding Oxygen Arc welding
gas exchange in this zone? no 5. The respiratory zone contains alveoli where gas is exchanged. This zone consists of the respiratory bronchioles‚ alveolar ducts‚ and alveolar sacs. 6. The pulmonary arteries carries blood that is (high or low) in oxygen to the lungs. Pulmonary capillaries exchange gases with the alveoli. Blood leaves the lungs in the pulmonary veins‚ which carry oxygenated blood back to the heart. 7. Name the three types of cells in the alveolus: 1. Type I cells; simple
Premium Respiratory system Oxygen Hemoglobin
Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes From (relatively) shiny metal strips to notsoshiny strips that are stained with dark‚ reddishbrown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white‚ foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after 30 minutes: Pretty dark coloured
Premium Oxygen Iron Carbon dioxide
Human Variations in High Altitude Populations Jessyca Caumo 26 november 1996 Thesis:The purpose of this paper is to describe the high altitude stresses and the general adaptations made by the Tibetan population in the Himalayas and the Quechua in the Andes. I Introduction II Background A Quechua People B Tibetan People III General Adaptations A Physical 1 Growth 2 Development 3 Core temperature 4 Extremity temperature B Non- Physical
Premium Andes Altitude sickness South America
assumed that baby Amira is in respiratory distress. Amira is currently receiving 30% flow-by oxygen at 10 minutes old to maintain oxygen saturation (Sa02) levels of 92%. Although the target Sa02 level at 10 minutes old is between 85-90% (Department of Health and Human Services‚ 2014) the fact that Amira is still displaying signs of nasal flaring and moderate work of breathing despite receiving flow-by oxygen is concerning. After conducting a brief initial top to toe assessment‚ weight and length‚ Amira
Premium Childbirth Caesarean section Infant
Jorge Nuñez Ms. Principe / Period 2 February 8th‚ 2011 Aim: How are we going to determine the empirical formula of a compound? Do Now: 1) What is the percent by mass of oxygen in H2C2O4? H2 = 2(1) = 2 ; C2 = 2(12) = 24 ; O4 = 4(16) = 96 Gram Formula Mass = 90 Percentage of Oxygen = 6490 x 100 = 71% 2) Calculate the percentage of water: -Mass of empty crucible and cover = 11.7g -Mass of crucible‚ cover‚ and hydrate before heating = 14.9g -Mass of crucible‚ cover‚ and
Premium Oxygen Molecule Chemical element
CO2 4) ___ GaBr3 + ___ Na2SO3 ( ___ Ga2(SO3)3 + ___ NaBr 5) ___ SnO + ___ NF3 ( ___ SnF2 + ___ N2O3 Using the equation from problem 2 above‚ answer the following questions: 6) If I do this reaction with 35 grams of C6H10 and 45 grams of oxygen‚ how many grams of carbon dioxide will be formed? 7) If 35 grams of carbon dioxide are actually formed from the reaction in problem 6‚ what is the percent yield of this reaction? Exam Review Sheet #1 Balancing
Free Carbon dioxide Oxygen Oxide
movements. The skeletal system and the muscle system maintain to posture and produce heat for the body. Increased blood supply: As people start to exercise the muscles will start wanting more oxygen to work faster so it can produce more energy at a faster rate‚ to keep up with the movement in the muscles. The oxygen in our red cells and the other nutrients are stored in the muscles to supply these muscles with energy which is called (glucose.) When people do short exercises such as running for a short
Premium Muscle Heart Blood
As the subject enters the exercise phase there is an increased metabolic demand due to the heightened workload of the skeletal muscles and organ systems. In order to accommodate this rise in oxygen demand there must be an increase in the subject’s minute ventilation. The rise in minute volume‚ with exercise‚ could be accomplished by increasing the volume of each breath‚ the tidal volume‚ increasing the respiratory rate or by some combination of the two. In the subject’s case it was a combination
Premium Heart Oxygen Muscle
oceans + used to form marine organism shells which were compacted to form sedimentary rock - plants evolved to photosynthesise‚ takingin co2 + releasing oxygen - scientists don’t kno where all nitrogen came from bc they weren’t there to record evidence but most theories suggest it ws due 2 volcanoes atmosphere today - nitrogen 78% - oxygen 21% - co2 0.04% - argon 0.9% - other gases v small amounts gas levels - co2 rises due to burning fossil fuels + deforestation - co rises due to incomplete
Free Carbon dioxide Oxygen Carbon