Synopsis The objective of this experiment is to determine the percentage by mass of calcium carbonate‚CaCO3 in toothpaste using back titration technique. A known weight portion of toothpaste is obtained to react with known volume and concentration of standard acid solution. After completing the reaction‚ the resulting solution containing excess acid is back titrated with known volume and concentration of standard base solution. Determination of excess acid after reaction allow us to calculate the
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We are all aware of the current state of our environment. Mother Earth is on the brink of total destruction brought about by pollution‚ irresponsible use of resources‚ and the excessive use of conventional fuel such as fossil fuel and nuclear energy. Part of the efforts to save our planet is to shift from using conventional fuels to alternative ones such as wind energy‚ solar‚ tidal‚ wave‚ thermal‚ biogas and biodiesel‚ alcohol and gasohol‚ and agro/industrial wastes. While others may argue
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Back to School: A Comparative Essay Walking back into school for the first time in years sent a rush of memories through my mind‚ from the tree I used to climb after school to the conversation that lead to the premature loss of my virginity and so much more. Surprisingly‚ my emotions lead me to something else altogether…looking at the dull concrete walls‚ iron laced windows and towering fences I realized; public school truly is a prison. Mind you‚ your average middle or high school may not have
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ensured that they wouldn’t harm the planet. But in reality the story was different. When she was given the responsibility of campaigning one of its product Ore Essentials‚ she came to know that the story behind growing the product is quite different. Ma Earth Skin Care was using a different strategy to maintain its image in the market. The company was paying the tribes neither for growing the product there nor for purchasing. They were actually buying its product at a cheap rate from a mainstream supplier
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Parker’s back Parker’s back In the story parker’s back the author reveals‚ the contradiction of the holy woman and the man that is prevailed to be the sinner. I feel that Parker grew from a boy to a man without realizing the inner changes he made. Parker is characterized as a ladies man that is covered in tattoos and swears a great deal. From a young age he is rebellious and doesn’t commit to anything. I believe that as a boy Parker thought foolish things such as tattoos‚ drinking‚ swearing
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Salt of the Earth Flannery O ’Connor ’s novels and stories are inhabited with unique and flawed characters who are the result of O’Connor ’s satiric worldly perspective. While they are sometimes humorous‚ these misfits are usually unpleasant. Critics have termed them "grotesque‚" but O ’Connor has rejected this term because it suggests that the characters are too weird to belong in the real world. Instead‚ O ’Connor insists that the South is inhabited by many such people. For every good or evil
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Lee 1 Lee Andrew Pamela Gressier English 105 May 23rd‚ 2014 There And Back Again Growing up‚ one of my most favorite places to go as a child was the jungle gym at Wardlow Park. I was always fascinated with the jungle gyms and park‚ and always made it my daily personal mission to go as much as I could. However‚ the Wardlow Park is vastly different now then it was back when I was a little kid. From the environment to the current inhabitants‚ almost every aspect of the park has changed. When
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An Analysis of Religions on Earth: Are Earth People Religious? Donna FalkenburgREL212 Living Religions Professor Charles Hall 5/5/13 I was sent to Earth to determine if Earth people are religious. During my time on Earth‚ I have observed that many of Earth’s people are religious and although there are many different types of religions‚ they show three different behaviors that are shown in many religions. The criteria I used to see if Earth’s people were religious or not were whether or not
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The importance of behavioral adaptations in turtles to thermoregulation and survival Katherine Whitehead Biology 301 Lab 7/15/13 Abstract Thermoregulation is necessary for ectotherms to survive. One important mechanism for thermoregulation seen in turtles is the ability to migrate between land and water habitats. This mechanism was studied using I-button data loggers placed inside marshmallow peeps to record temperatures in two different microhabitats; one in a stream and the other on the
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the concept of the flux capacitor. Before Doc can make his first trip‚ Libyan terrorists‚ from whom he stole the plutonium‚ arrive and shoot him. Marty attempts to escape using the machine and inadvertently activates the time machine where he travels back to 1955 and finds himself without the plutonium needed for the return trip. While exploring the 1955 Hill Valley‚ Marty meets the teenage George who is being bullied by Biff Tannen. As George is about to be hit by Lorraine’s father’s car‚ Marty pushes
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