experience of the soldiers was beyond anything that had ever been faced before. A soldier who was attacked by poison gas says that “It seemed as if [his] lungs were gradually shutting up and [his] heart pounded away in [his] ears like the beat of a drum. On looking at the chap next to [him‚ he] felt sick‚ for green stuff was oozing from the side of his mouth.” (Pressey‚ “Poisonous Gas”). After getting attacked‚ this soldier isn’t only poisoned physically‚ but is poisoned mentally as he looks at the
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stopper with the short‚ straight‚ plastic gas delivery tubing through its center. Place the test tube into one of the wells of the 24- well plate. The test tube must stand up straight‚ so wrap a little tissue paper around the bottom of the test tube to help wedge it upright into a well opening. See Figure 1. Observe the reaction. Ties of Gases c. Fill one wide-neck pipet bulb completely with water‚ invert and quickly place it on top of the test tube ’s gas delivery tube as shown in the picture at
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the Joule-Thompson Effect and Coefficient Determination for Helium and Carbon Dioxide Niki Spadaro‚ Megan Cheney‚ and Jake Lambeth University of North Florida‚ CHM4410C Fall 2010 The Joule-Thomson coefficient explains the behavior of any real gas when changes in intensive properties‚ such as temperature and pressure‚ occur. The coefficients for helium and carbon dioxide were determined using a Joule-Thomson apparatus that created constant enthalpy within the system. Using literature values for
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WANTED 0.4 Per 100g Reward For the Capture of: NITROGEN Also Known as: StickStoff‚ Nitrogeno‚ A3OT Height 65pm Weight 14.0067 Characteristics Melting Point- (-210 C) Boiling Point- (-195.795 C) State at Room Temp –Gas Density- 1035 (4 K) Colorless Odorless 78% of Air Wanted For At low temperature can result in burns on hands‚ fingers and other areas of body Prisoner Number 7 Captured By: Daniel Rutherford (1772) Other Covalent Radius -0.71 Electron Affinity- not
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Science quiz review 1. Recall safety rules of a science lab. (WHMIS) a. 2. List examples of elements‚ mixtures‚ and compounds. a. Elements: hydrogen; oxygen; iron; zinc‚ Mixtures: sea water; crude oil‚ Compounds: water; sugar; salt 3. Compare and contrast the properties of elements‚ mixtures and compounds. a. Elements consist of a single kind of atom; They have unique‚ fixed properties; They cannot be separated into simpler unique substances. Compounds consist of two or more kinds
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ethylene glycol. This was discovered as the gas was heated to 90 degrees Celsius causing the liquid unknown to evaporate into a gas while recording the mass‚ volume‚ temperature‚ and volume. This provided the mass of 1.6 grams which was found by subtracting the mass of the Erlenmeyer flask‚ aluminum cover‚ and rubber band from the mass of the Erlenmeyer flask‚ aluminum cover and rubber band and unknown gas after heating. Then the temperature of the gas was determined by taking the temperature of
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goal‚ cutting the straw caused the gases to not have to go as far‚ and meet in the middle. Background The particles in a gas are very loose and tend to move around a lot very quickly. The particles in a solid are very compact and vibrate but don’t really move very much. The particles in a liquid however are more lose than the particles in a solid but not less than a gas. Materials Goggles | Apron | Gloves | Straw(1) | Ammonia | Hydrochloric acid | Q-tip(2) | Test tubes | Hood | Pencil
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5.04H: Gas Stoichiometry Lab Worksheet Name: _________________________ Data and Observations: Present all relevant data in a data table below. Include an observations section for any observations that you made during the lab. (5 points) |Data Table | |Mass of magnesium strip (grams) | | |Volume of gas collected (mL) | | |Barometric pressure (atm)
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Detailed Lesson Plan in Science IV (Soil Erosion) I. Learning Objectives a. Identify the agents of soil erosion. b. Explain how each agents cause erosion. c. Perform related activities enhancing knowledge about soil erosion. d. Enumerate ways and means on how to help prevent soil erosion. II. Subject Matter a. Topic: Soil Erosion b. References: c. Concepts: Soil Erosion and its Effects d. Sciences Processes: Observation‚ Experimenting‚ Analysing e. Materials: 2 large
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MIXTURES‚ SOLUTIONS‚ SUSPENSIONS AND COLLOIDS MIXTURES A mixture is a combination made up of two or more different substances which are mixed but are not chemically bonded. There are also types of mixtures such as homogeneous mixtures and heterogeneous mixtures. SOLUTIONS A solution is defined as a homogeneous mixture composed of a solute; a substance dissolved into another substance known as a solvent. They can also be defined as groups of molecules that are mixed up completely in even
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