2. Preparation Of 1 M Na2CO3 Molecular mass of Na2CO3 = 106g Mass of salt in 100 ml of 1M solution = 10.6g Weighing of salt using electrical balance * Mass of Na2CO3 + beaker = 78.64g * Mass of beaker = 68.04g * Mass of Na2CO3 = 10.6g 1. 10.6g of Na2CO3 was weighed in a dry beaker. Small amount of distilled water was added and the salt was dissolved. 2. The contents of the beaker were transferred to
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mechanisms that regulate cellular senescence‚ organismal ageing‚ and species-specific lifespan depend on a synergy of pathways that are multifactorial and extremely complex‚ though not yet completely understood. Recently‚ the development of new molecular techniques has elucidated‚ at least in part‚ the primary pathways involved in ageing. In parallel with the search to uncover the factors that control ageing is the endeavor to discover methods of extending lifespan‚ in hopes of living both youthfully
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ISE: The Determination of Chloride Unknown: #34 I. Purpose: In experiment V‚ “ISE: The Determination of Chloride”‚ the concentration of an Unknown Chloride solution‚ and the Wt% of NaCl in a sample of celery salt‚ were both determined. To determine the concentration of an Unknown Chloride solution‚ a Calibration plot is first prepared. The Calibration plot is made by first measuring a series of known concentrations of Cl- (with the same activity of the unknown solution) and obtaining
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● Cobalt(II) Chloride Hexahydrate CoCl2.6H2O‚ was weighed in a weighing boat. The Cobalt(II) Chloride Hexahydrate was transferred into a 100mL volumetric flask dissolved in water. ● 25 mL of the dissolved was measured‚ using a graduated cylinder and few of the dissolved Cobalt (II) Chloride Hexahydrate‚ was poured into test tube. The test tube was labeled with a tape‚ to signify 25 mL and the spectrophotometer was used to record the U-V visible ABS (absorbance spectrum) with the wavelength of 515
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1) Research Problem What is Molecular Gastronomy? Best described by Hervé This‚ as the understanding of food apart from the chemistry and physics behind the preparations of any dish for example‚ why a mayonnaise becomes firm or why a soufflé swells. So‚ how can chemistry and physics lead to a new ways of cooking? One example quoted by Herve is the egg. If we heat an egg‚ water evaporates‚ the proteins denature and polymerize to enclose water‚ and the end result is a cooked egg. Alternatively
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Gravimetric Analysis of a Chloride Salt CHEM 1001 Purpose: To illustrate typical techniques used in gravimetric analysis by determining quantitatively the chloride content in an unknown soluble salt. Theory: AgCl(s) is a very insoluble solid‚ yet still does have some solubility. Because of these traits‚ the following reaction is able to occur: Ag+(aq) + Cl−(aq) → AgCl(s) . This reaction is able to occur in both directions. When a soluble silver salt such as AgNO3 is added to a solution containing
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What is Magnesium chloride(MgCl2)? What is it used for and why? What does it look like? Magnesium chloride is the name of a chemical formula of MG CL two. This is a salt and they are a typical ion halide. halides are very soluble to water. magnesium chloride is used for deicing on highways in sidewalks and also parking lots it is a good source of de-icing. The color that it appears is white or colorless crystalline solid. What is magnesium or what is chloride? whare are they located? You can find
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Weight management has been thought of as only weight loss by many. Weight management covers all aspects of attaining and maintaining optimum weight for a healthy lifestyle. Health professionals now realize that prevention of weight gain as well as weight loss and improving health status are important goals. These goals must be individualized for success. At the outset of treatment‚ the patient and health care provider should discuss and agree upon goals. The goals must take into account the
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Sodium hypochlorite‚ also known as chlorine bleach‚ soda bleach‚ or household bleach is a chemical with the formula NaClO. A common way sodium hypochlorite gets into the San Francisco bay is through daily household cleaning products such as laundry bleach. In a survey conducted by The Clorox Company‚ it was found that four out of five households use sodium hypochlorite bleach for their laundry. Since laundry detergent companies are not required to list every ingredient‚ customers are often not aware
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Apparent Weight: Person on Scale in Elevator A person with mass‚ m‚ who is located at or near the surface of the Earth will always have some weight W=mg. When a person stands on a scale‚ the reading (the number of pounds or newtons) on the scale is actually the Normal Force that the scale exerts back towards the person to support the person’s weight. (Note that the person and the scale are stationary relative to each other‚ in other words they are always in contact with each other‚ so they always
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