Determination of the Solubility of Calcium Hydroxide Apparatus * Solid calcium hydroxide * 0.4 mol/dm hydrochloric acid * Distilled water * Pipette * Triple valve rubber pipette filler * Conical flask * Beaker * White tile * Clamp and stand * Methyl orange indicator Producing the calcium hydroxide solution 1. Roughly fill a beaker with 200cm³ of distilled water. This does not need to be accurate because samples will be taken from this. 2. Add solid calcium
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Melissa Carrithers 9-17-14 Period: 6 Determination of the Empirical Formula of Silver Oxide Purpose: To find the percent composition and empirical formula of silver oxide can then be calculated‚ based on combining the ratios of silver and oxygen in the reaction. Hypothesis: Silver oxide decomposes to silver metal and oxygen when strongly heated. Heating Silver oxide causes the oxygen to be driven off‚ leaving only the silver metal behind. The total mass of the products of a chemical reaction must
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Using Google An extremely common source of information this day in age is the internet. Because of the internet and the increasing availability of wireless streaming of information‚ most people use it every day for multiple different types of tasks. Because of the massive amount of information that can be obtained through the internet‚ it is necessary to find information by using search engines such as Google. A search engine like Google will take keywords and search through a massive database
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g 3‚700 kJ (880 kcal) Smoke point 213 °C (415 °F) Iodine value 99-108 Acid value 1.2 Saponification value 180-190 Unsaponifiable value 3-5 Composition of Rice bran oil Rice bran oil has a composition similar to that of peanut oil‚ with 38% monounsaturated‚ 37% polyunsaturated‚ and 25% saturated fatty acids. The fatty acid composition is: Fatty acid Percentage C14:0 Myristic acid 0.6% C16:0 Palmitic acid 21.5% C18:0 Stearic acid 2.9% C18:1 Oleic acid 38.4% C18:2 Linoleic acid
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What is an epic hero? Beowulf was an archetype or‚ perfect example of what an epic hero is. Being infallible‚ he had many characteristics that showed this. Three of them are strength‚ bravery‚ and determination. Beowulf was always eager to face anything he was challenged with. Beowulf possessed superior physical strength. If weapons were useless he’d use his hands and the strength in his fingers. (218-220) Beowulf was the strongest of the soldiers. When he was called to fight for his people
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moment‚ Facebook is so popular for most people especially teenagers. Using the Facebook has lots of benefits for everyone who loves making friends through networks. Firstly‚ Facebook has a lot of functions that is very popular and interesting nowadays. It’s like a friendship book. If you use Facebook‚ you can make your own profile. You also can find your old friends when you were at a primary or high school on Facebook networks by using only their names or their E-mail addresses. In addition‚ you can
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Melissa Carrithers AP Chemistry period 6 2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and
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Throughout the story‚ we are able to see the different worlds Ambrose Bierce lived in compared to the one that we know. This is the first part of the story that I noticed‚ because in today’s world‚ no man would ever be hung‚ let alone executed for tampering with a bridge. Peyton Farquhar grew up as a rich southerner. He had everything that a man wanted at his point in time: a wife‚ children‚ land and slaves. However‚ he had always thought that something was missing. Because of the fact he was not
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that Helen Keller offers in her story is about Perseverance and Determination. She develops this theme because in her story she did go through a major change in her life. The impact and lessons readers took away from The Story of My Life is the value of perseverance. Without the ability to see or hear‚ Keller learned to function and interact within the community in a meaningful and healthy way. Her motivation‚ commitment‚ and determination to make a place for herself in the world started when she was
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Key Terms: Mineral- a naturally occurring‚ inorganic solid that has a crustal structure and a definite chemical composition Rock- a large mass of stone Organic- derived from living organisms Inorganic- not derived from living organisms Pure Substance- a form of matter that has a constant chemical composition and characteristic properties. It cannot be separated into its several components without breaking its chemical bonds. Element- a substance composed of a single kind of atom
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