Physics of Fireworks. Have you ever wondered where those magnificent flashes in the sky came from? How are those huge booms of light working? What makes them change colors? What gives them all their shapes? Be prepared to have your mind completely blown; from monks warding off ancient sprits‚ to Caption John Smith having a party‚ to Queen Elizabeth’s ’Fire masters’. Fireworks have been the biggest‚ loudest‚ most well-known symbol of freedom and light for centuries. From the huge Willows that
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colors of the Atomic Emission Spectra of several metallic ions. Materials: Safety glasses 10 test tubes Test tube rack Paper Pencil 50 mL beaker Bunsen burner Nichrome wire Barium Nitrate Copper Nitrate Strontium Nitrate Lithium Nitrate Potassium Nitrate Sodium Chloride Calcium Nitrate Unknown solutions A‚B‚ & C Hydrochloric Acid Wash bottle (with distilled water) Procedure: 1. Label the test tubes with the names of the solutions and unknowns. 2. Place about 5 mL of each solution
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Case Study: Newsflash! Transport Proteins on Strike! 1. What is the meaning behind the PHOSPHOLIPIDS’ chant? Phospholipids make up most of the cell membrane‚ in a phospholipid bilayer. Phospholipid molecules form two layers‚ with the hydrophilic (water loving) head facing the extracellular fluid and the cytosol (intracellular) fluid‚ and the hydrophobic (not water loving) tails facing one another. The cell membrane is constructed in such a way that it is semipermeable‚ and allows oxygen
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nonfebrile controls. The osmolality in febrile children with convulsions was 3.8% (P < 0.01) and without seizures 3.5% (P < 0.01) lower than in nonfebrile nonconvulsive children. The changes in CSF sodium concentration‚ and to a lesser extent potassium and chloride concentrations‚ paralleled those of CSF osmolality. A positive correlation was observed between the CSF and serum osmolatities (r = 0.73‚ P < 0.0001)‚ and sodium concentrations (r = 0.63‚ P < 0.0001). A negative correlation between
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compartment to compartment by osmosis‚ which depends on solute gradient‚ and filtration‚ which is a result of hydrostatic pressure gradient. Electrolyte composition: intracellular- low sodium and high potassium extracellular- high sodium and low potassium (only 2% of total body potassium is in extracellular fluid) low protein in interstitial fluid compared to high protein in intravascular compartment. Describe normal fluid and electrolyte requirements and increased requirements within
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divided mainly into two groups on the basis of physical and chemical properties – Metal and Non-metal. Metals: Part - I Physical Properties of Metals:- Hardness:- Most of the metals are hard‚ except alkali metals‚ such as sodium‚ potassium‚ lithium‚ etc. Sodium‚ potassium‚ lithium etc. are very soft metals‚ these can be cut using knife. Strength:- Most of the metals are strong and have high tensile strength. Because of this big structures are made using metals‚ such as copper and iron. State:-
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BeCl2 | Potassium iodide | KI | Aluminum oxide | Al2O3 | 23. Write the correct formulas for the following binary molecular compounds. Compounds | Formulas | Carbon monoxide | CO | Boron tribromide | BBr3 | Sulfur hexafluoride | SFl3 | Carbon dioxide | CO2 | Carbon tetrabromide | CBr4 | Nitrogen dioxide | NO2 | 24. Write the correct formulas for the following compounds that contain polyatomic ions. Compounds | Formulas | Sodium hydroxide | NaOH | Potassium nitrate |
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or concentration of the ion in the compound. Some colors are very weak and are easily overpowered by stronger colors. For instance‚ the presence of a potassium ion in a compound will color a flame violet. But on the other hand‚ even trace amounts of sodium ions in a compound produce a very strong yellow flame‚ often times making the potassium ion very difficult to detect. To counteract the effects of any sodium impurities‚ one can view the flame through a piece of cobalt blue glass. The cobalt
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glucose along with water and electrolytes (esp. sodium and potassium). The fatty acids are converted into ketone bodies by the liver. Ketone bodies are acidic; their accumulation in the circulation due to lack of insulin leads to metabolic acidosis. 2. What are the commonly seen blood glucose levels? 300-800 mg/dL but some can get as high as 1‚000 mg/dL 3. What fluid and electrolyte disturbances commonly occur and why? Soidum and potassium due to the amount of water loss 4. What acid-base disturbances
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Decomposition of Potassium Chlorate Hypothesis: Potassium chlorate decomposes into potassium chloride and oxygen gas‚ which means that when the glowing splint is inserted into the test tube‚ the flame will have enough fuel to fully reignite the splint. When the manganese dioxide is added‚ this will increase the rate of the production of oxygen in the reaction‚ without affecting the state of the manganese oxide. Materials: Test tube Retort stand Bunsen burner Scoopula Flint sparker 2cm of potassium chlorate
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