Objectives To study the quantitative relationship between the amount of reactants and products of a reaction ( that is how many moles of A react with a given mol of B). A known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry and the valency of magnesium Introduction Stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction. Stoichiometry can be used to calculate the
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On November 11‚ 1921‚ the Tomb of the Unknown Soldier was established in order to remember the men and women and at least give credit to the people who fought for our country but couldn’t identify them. I should be chosen for the wreath laying at the Tomb of the Unknown Soldier because I want to show them my absolute sincerest gratitude towards them. There are no words to explain how much obligation I have for all the soldiers who have fought for my freedom. This is important to me because I would
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solid is in equilibrium with its liquid. A solid compound changes to a liquid when the molecules acquire enough energy to overcome intermolecular forces holding them together in an crystalline lattice structure. The melting point range is defined as the span of temperature from the point at which the crystals first begin to liquefy to the point at which the entire sample is liquid. This data can be tabulated experimentally through multiple trials for an unknown and referenced against the chemistry
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WEEBLY Liquid Gold Studio http://liquidgoldstudio.weebly.com/ The business idea is a startup studio specializing on shooting mother‚ babies‚ and families documenting their breastfeeding journey. As a startup studio‚ services are mainly basic packages. A gallery of some sample works is also featured to give clients idea of the team’s works. The minimalist in me wants a clean and simple looking website so the possible client can focus attention to the contents and avoid being distracted by too
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being altered to produce a result. There are two independent variables in this experiment which are the brand of dishwashing detergent; Palmolive‚ Morning Fresh and Ultra Coles Brand and the type of bacteria used which are; Micrococcus Luteus and an unknown bacteria from a sponge. Dependent Variable The dependent variable is the factor that is being tested which is the size of the zone of inhibition from the detergent solution and the bacteria. It will be measured in millimetres using a ruler. Constant
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Chapter 4 Exchange Rate Determination 1. The value of the Australian dollar (A$) today is $0.73. Yesterday‚ the value of the Australian dollar was $0.69. The Australian dollar _______ by _______%. A) depreciated; 5.80 B) depreciated; 4.00 C) appreciated; 5.80 D) appreciated; 4.00 ANSWER: C SOLUTION: ($0.73 – $0.69)/$0.69 = 5.80% 2. If a currency’s spot rate market is _______‚ its exchange rate is likely to be _______ to a single large purchase or sale
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we have learned in the lab to identify two unknown organisms. PROCEDURE I was given unknown #76. I performed the streak plating method with my unknown organisms. To perform this exercise I needed a TSA plate and labeled the bottom of it with my name‚ group number and organism. I also divided the bottom into three sections. After that‚ I sterilized my inoculating loop using the bunsen burner flame. After letting the loop cool‚ I reached into my unknown test tube with my loop and grabbed the organisms
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experiment is to determine the unknown DNA plasmid using restriction enzymes and conducting electrophoresis finally comparing the resulting fragments with the known restriction map. In this lab‚ it succeeds in showing the fragments. In this report we will discuss the‚ results‚ limitations and possible errors. Introduction In biology restriction enzymes are used in several ways to modify and manipulate DNA molecules. One common use is to compare pieces of DNA from one that is unknown‚ with fragments of DNA
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The first test conducted on unknown bacteria 32 was the Gram stain. From this stain‚ unknown 32 was found to be a Gram-positive cocci. This test eliminated all possible Gram-negative bacteria‚ Gram-positive rods and Gram-positive spirillium. Next‚ the endospore test determined whether or not the Gram-positive bacteria contained endospores. With the use of malachite green‚ steam‚ and safranin it was found that unknown bacteria 32 did not contain endospores. This eliminated Gram-positive cocci Sporosarcina
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A Comparative Essay between “Disabled” and “An Unknown Girl” Moniza Alvi reflects on India as her hand is hennaed by “an unknown girl” “in the evening bazaar”. The predominantly upbeat mood of this poem contrasts with the pessimistic mood in “Disabled” written by Wilfred Owen‚ a soldier in the First World War‚ stating his anti-war view through a poem on the life of a young soldier “sewn short at elbow”‚ crippled by war. In his poem‚ the difference between past and present allows Owen to reveal
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