Chemistry Lab Getting to know your Bunsen burner Part I The Bunsen or Tirrell burner is commonly used in laboratory heating operations. While the details of construction vary among burners‚ each has a gas inlet located in the base‚ a vertical tube or barrel in which the gas is mixed with air‚ and an adjustable opening or ports in the base of the barrel to introduce air into the gas stream. The burner may have an adjustable needle valve to regulate the supply of gas‚ or adjusting the
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WHAT IF EARTH STOPS SPINNING? As we all know‚ planets spin. Our solar system was formed billions years ago from a spinning cloud of gas and dust. Nowadays‚ the Earth is turning at more than 16 hundreds kilometers an hour‚ bus it’s gradually slowing down about two seconds every one hundred thousand years. BUT WHAT WOULD HAPPEN IF THAT SLOWDOWN SPEEDS UP? If the speed of rotation were reduced by about one kilometer per hour‚ traffic air would face serious consequences. Most commercial aircrafts
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symbol is U‚ with an atomic mass of 92; A Molar Mass of 238.028910‚ and 92 electrons as well as protons and a total of 6 valance electrons. Its melting point is 2‚070 degrees Fahrenheit (1‚132 degrees Celsius‚ or 1405.372 K) and with a boiling point of 7‚468 degrees Fahrenheit (4‚131 degrees Celsius‚ or 4404.261 K) according to “Royal Society of Chemistry”. In nature‚ it is a silver/whitish and shiny metal that is both ductile and malleable. Unlike most metals this one is highly toxic‚ being both
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Kelly Felicetta Tougher Plants Beating Stress by Protecting Photosynthesis in Genetically Modified Plants Part 1: Stress 1. The major stresses that agricultural plants face are drought stress‚ cold stress‚ heat stress‚ flooding stress‚ mineral deficiency stress‚ salinity stress‚ and aluminum toxicity stress. Part 2: Glycine Betaine 2a. Wild type means it is the phenotype of the typical form of a species as it occurs in nature. 2b. L1 is different from the wild type because it is a strain
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to hold the thermometer in place. 5. Ignite the Bunsen burner and using direct heat melt the naphthalene powder until it completely turns to a liquid. When the temperature reaches approximately 90o Celsius‚ stop heating. 6. Observe the change in temperature from 90o to 70o Celsius‚ recording the temperature at regular intervals‚ preferably 15 seconds. This data will be used to make a chart later. 7. Once the temperature has fallen to 70o‚ melt the naphthalene which is now frozen
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Before the 1900s‚ tin was commonly used to package household foods. Since it protected the foods inside‚ and it could be bent with ease‚ it was regarded as an inexpensive‚ easy and health conscious way to keep foods fresh. Some of its disadvantages‚ which lead to its defeat to aluminum‚ included the fact that it could only be rolled thicker than aluminum; it became brittle when warm‚ reducing its malleability greatly‚ and the tin foil created a strange aftertaste‚ which was undesirable to many.
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The hammer crusher‚ also called the hammer breaker‚ is used to crush all kinds of medium hard and brittle materials of little-abrasion‚ whose compressive strength is no more than 100MPa and moisture content less than 15%‚ such as coal‚ salt‚ chalk‚ gypsum‚ tile and limestone. It is also used to crush fiber structure‚ cracked wood of strong elasticity and toughness‚ paper‚ or the waste of cracked asbestos cement to recycle the asbestos fiber and so on. Moreover‚ the hammer crusher can not only be
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Qualitative resources used were spinach leaves‚ plastic syringe‚ 2 250 mL beaker “one hot‚ one cold”‚ fluorescent circular lamp‚ 2% bicarbonate sodium‚ a hole punch‚ and thermometer using degrees Celsius for water temperature. One-person Prepared specimen plate with 40 hole-punched spinach leaves‚ before mixing it in the 250 ml beaker diluted water containing 2% sodium bi-carbonate‚ that is then poured in the syringe approximately at 20 ml. Did require
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In equatorial areas‚ their climate is different from tropical marine regions‚ because in these parts‚ the temperature of the equatorial regions is hot throughout year‚usually of temperatures of around 27 degrees celsius‚with a very low temperature range of usually less than 3 degrees celsius. Present in these regions is also a very wet climate of often more than 2000mm annually‚ which constitutes to more rainfall than in tropical marine regions. Vegetation and Soils In tropical marine areas‚during
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we inoculated half of the plate‚ which was the S/D media. The Plate’s that we had provided too us were the BAP‚ MSA‚ MAC‚ and EMB. When we were successfully inoculated the S/D media the plates were put in the Incubator at approximated 37 degrees Celsius. The second day we had came into the laboratory we had too read the Nutrient Agar plate that was the one that we had too the 3 phase isolation plate. My results were somewhat correct but I had a lot of backtracking. After that we had too read the
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