Experiment #6: Colorimetric Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of
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A penny‚ something that someone would consider unworthy‚ could symbolize a strong relationship between a father and a son that could not freely express their love for each other due to the fear they carried inside them "If Father hadn’t been there‚ I might have told her the whole story." Despite the fact that the Father didn’t express his love for his son on a regular basis‚ he offered Pete a very shiny penny that revealed the hidden love he had for him. Although the act of giving the penny to his
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Practical 4 Determination Of Fruit Firmness Introduction The development of sensors to measure fruit internal quality variable is one of the challenges of post – harvest technology. Several variables can currently be measured‚ including sugar content‚ firmness and internal disorders. Fruit quality is related to both internal variables (firmness‚ sugar content‚ acid content and internal effect) and external variables (shape‚ size‚ external defects and damage). Increasing consumer demand for high
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such as cancer‚ flu and cold by using high amounts of vitamin C. First of all‚ Vitamin C‚ also known as ascorbic acid‚ is a molecule with complex characteristics despite its simple structure. It is an “elusive vitamin‚ very variable in concentration even in food groups (fruits and vegetables) that are recognised as good sources of the vitamin‚ very soluble in water and very sensitive to alkali‚ oxidation and heat” (Nobile & Woodhill‚ Vitamin C : the Mysterious Redox-System A Trigger of Life?‚ 1981)
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Food Chemistry 138 (2013) 227–233 Contents lists available at SciVerse ScienceDirect Food Chemistry journal homepage: www.elsevier.com/locate/foodchem Analytical Methods Determination of volatile N-nitrosamines in meat products by microwave-assisted extraction coupled with dispersive micro solid-phase extraction and gas chromatography – Chemical ionisation mass spectrometry Man-Chun Huang‚ Hsin-Chang Chen‚ Ssu-Chieh Fu‚ Wang-Hsien Ding ⇑ Department of Chemistry‚ National Central
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The Adventure of Seymour the Sperm and Penny the Egg Psy/265 Let me introduce myself‚ I am Penny the Egg and today I will embark on one of the most exciting times in my life span. This has been a long expedition and now that I have reached the infundibulum‚ this is the outer portion of a female fallopian tube. The name I was in the medical word is “Ova”‚ most people just call me egg but my name again is Penny. I have been in contact with a germ cell named Seymour. His medical name is sperm
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Kelsey Fiely Composition 1 Cause/Effect November 12‚ 2014 Single Parent Families Single parenting has several effects on both the children and the parent. These can include the risk‚ from the quality of parenting to the exposure of stress; the advantages‚ from the confidence of both the child and parent to the strong bond they have with each other; and the disadvantages‚ from the poor financial status to the effects that take place for both the child and the parent. These choices that parents make
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States should keep the penny or stop the production and distribution of it. My claim is yes‚ we should stop the production of the penny. My reasons being that pennies are a waste of space(Jeff Sommer)‚ it costs more to produce them than what they are worth(Jeff Sommer)‚ and with pennies gone‚ retail sales will be rounded up or down(Jeff Sommer). The counterclaim is that we should not stop the production and distribution of the penny. Some people say no to doing away with the penny for the following
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Prologue The sun warmed the young girl’s face and shoulders; grass tickled her bare feet as she wandered through the sprawling cemetery. A woman dressed in a fashionable grey suit knelt next to one of the tall graves‚ tears streaming down her face. The girl approached the woman cautiously; the way one would a frightened doe in the woods. The air smelled like it did when her mother left a batch of cookies in the oven for too long‚ like burnt sugar. The woman turned towards the girl‚ her
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Melting pointe determination #01 Introduction: Objective To learn how to obtain an accurate melting point using a MELTING POINT APPARATUS‚ then use them to draw eutectic curve and determine the eutectic point. Melting point of a solid is the temperature at which the solid and its liquid form are in equilibrium‚ i.e.‚ molecules move back and forth between the two states at the same rate‚ so both phases remain present. If the temperature of a solid is measured carefully as the solid is heated
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