perform this experiment. 2. Take Beaker 1 and fill it ¾ full with refrigerated water (12 degrees Celsius). 3. Take Beaker 2 and fill it ¾ full with room temperature
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agar media using the streak plate method. Four quadrants were drawn‚ so that the bacteria could be isolated as much as possible. Each bacteria was inoculated into two different plates‚ so that one could be incubated at 37 degrees Celsius and the other at 25 degrees Celsius. Bacteria B‚ which was incubated at room temperature showed red colonies throughout its media. This identified it as the gram-negative bacteria Serratia marcescens‚ but further tests had to be conducted to fully confirm. Bacteria
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Extraction of Caffeine from Tea Leaves Introduction Caffeine is soluble in boiling water and as a result it is easily extracted from tea bags by steeping in hot water. This process leaves behind the water insoluble portions of the tea bag. However‚ water extracts more than just caffeine‚ so a final separation is done with an organic solvent that will dissolve primarily caffeine. The organic solvent used in this experiment is Dichloromethane (CH₂Cl₂). Dichloromethane is less polar than water
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Abstract By understanding how components within certain cells confer their ability to regenerate or antagonize cellular differentiation into specific cell types‚ we can change these components to make our cells have regenerative properties. To understand this‚ we examine cells of the germline‚ called germ cells. These "parent" cells of sperm and egg cells have the ability to become any cell type of each subsequent generation‚ and are thereby totipotent. This totipotency essentially makes germ cells
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What is Krypton? Some might say it is the planet Superman is from‚ but it is actually a chemical element. Krypton is one of the rarest gases on Earth which makes it very expensive. It can also be found in Mars’s atmosphere‚ but only makes up 0.3 parts of a million. Krypton was discovered in 1898 by Morris Travers and Sir William Ramsey. It was named after the Greek word‚ kryptos‚ which means “hidden”. The basic facts: Noble gases carry the trait of not reacting with many elements and Krypton
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Ice Water Fish Vs. Room Temp Fish INTRODUCTION Fish‚ being an aquatic animal‚ has a respiratory system that is different from animals that live on land. It is capable of breathing underwater‚ without coming up for oxygen. Fish are able to breathe underwater due to a breathing organ known as gills; which is made up of thin feathery sheets of tissue membrane containing many blood vessels through which oxygen passes allowing fish to breathe (Edmonson 2006). Fish breathe by the process of water
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Sulphonation – The Process Most electrophilic substitution reactions are irreversible but sulfonation is an exception. Treatment of benzene with "oleum" (a solution of SO3 in concentrated sulfuric acid) will give the sulfonic acid‚ the electrophilic species being sulfur trioxide which is Lewis acidic. Fig – 1 Sulphonation : Benzene equation The sulfonic acid can be converted back by treatment with hot aqueous acid. The reason for this reversibility is the fact that the Wheland intermediate is overall
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the ice in Antarctica melted‚ the sea level would rise 60 metres. In summer it is almost one-and-a-half times the size of the USA. Antarctica is known for its high‚ frigid desert‚ where winter temperatures regularly dip as low as minus 70 degrees Celsius. But the seemingly barren continent’s coastline is actually rich with marine life‚ including penguins‚ seabirds‚ seals and whales. Even the darkest depths of the Weddell Sea off western Antarctica are a treasure trove of life: A survey of the Weddell
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Ge-72 for As-72 (Germanium Element). The atomic number for germanium is 32. It’s atomic mass is 72.59 g. Mol -1. The electronegativity for germanium is 1.8. The density of germanium is 5.3 g.cm-3 at 20o Celsius. Germanium also has a melting point of 937o Celsius. Its boiling point is 2830o Celsius
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settle on it a particularly decent decision for military applications. In any case‚ there are different qualities that settle on it a particularly fine decision for military applications. Can hold up against temperatures as low as short 40 degrees Celsius High mechanical quality and unbending nature Unequaled weariness
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