* Introduction The melting point is defined as the temperature at which the solid is in equilibrium with its liquid‚ and this characteristic is very unique‚ so a substance can be determined by the melting point. Determination of the melting point is very important technique in many areas of chemistry especially‚ in organic chemistry area because the melting point is really significant in order to identify the purity and the identity of a substance. Measuring the melting point is a fast and
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purified‚ and even bottled water. All of these solutions are very similar‚ but one difference that could be proposed between them is the rate of nucleation when the different solutions are super cooled. According to one study‚ “Supercooling occurs when a liquid does not freeze although its temperature is below its freezing point” (Gholaminejad & Hosseini‚ 2013). Many experiments have been conducted on this area of study‚ but their experiments were limited because distilled water was the only type of aqueous
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EXPERIMENT 1 COLLIGATIVE PROPERTIES OF SOLUTIONS Date: December 03‚ 2013 Locker 21 Members: Vanessa Olga Dagondon Christine Anne Jomocan Janica Mae Laviste Nablo Ken Menez A. TYPES OF DISPERSED SYSTEMS Results and Discussion The first part of the experiment aims to differentiate the different dispersion systems. In this experment‚ three systems are introduced: true solution‚ colloidal dispersion and coarse mixture. The said three systems are classified through a property of colloids known as the
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• Incensement of total capacity of treatment plant and improvement to water quality can be achieved vary easily. It’s possible due to lamella settlers‚ which provide high treatment in smaller footprint and high degree of settling capacity also process is more efficient and faster than conventional treatment with sedimentation tank. That because of one of most important feature of lamella settlers‚ are series of inclined plate which the suspended particles goes down with water flow‚ where solid particles
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Bubble Inside a Bubble Materials • • • • • • • • Granulated sugar (we had our best results using Imperial Sugar and Dixie Crystals) Dish soap Water Tablespoon Scissors Pipette Cup Adult supervision Bubbles form because of a combination of water’s hydrogen bonds and the oily film you can see shimmer in the light. The oily film you see is actually two separate layers of soap attached to‚ and surrounding‚ hydrogen-bonded water. Solar Oven S’mores Materials • Pizza box • Two clear sheet protectors
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Differential Scanning Calorimetry (DSC) was carried out to investigate the thermodynamic properties of CXB‚ different carriers‚ PMs and SD preparations. Their thermograms are represented in Figures (9-14). The thermogram of CXB in Figure (9) was characterized by single‚ sharp endothermic peak at 165±0.56°C which represents the melting point of CXB. Some researchers reported that CXB melting point ranging from 160.79–164.64°C (127)‚ and Paradkar A. et al. (2002) reported that sharp endotherm corresponding
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Extract Preparation Several samples of Agaricus bisporus were dissected into their various anatomical components (see Figure 1.) 9.1248 g of the lower stem (S2) was collected and frozen with liquid nitrogen. The frozen sample was ground up and mixed with 28.9 mL ± 0.1 mL of a sodium phosphate buffer (50 mM‚ pH 6.5). The mixture was then transferred into a centrifuge tube and placed in a Beckman Coulter Avanti J-26 XPI high speed centrifuge. The sample was spun at 20‚000 rcf for 20 minutes at 4
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Chapter I. BACKGROUND OF THE STUDY Charcoal one of the earliest known forms of ink‚ was used as early as 30‚000 BC. The first of its use documented in the continent of Europe. It may be a bit primitive to these modern times but still very useable for those who want to try it. The recipe of making it however is similar to those inks made by ancient civilizations such as the ink used by the Ancient Egyptians. We propose to make charcoal ink as a statement to increase of those in the Philippines who
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There are many chemicals in our world that are soluble‚ however‚ these chemicals have to follow a set of rules to determine how soluble each chemical is and if it is at all. This is what we call solubility laws. These laws show what chemicals are soluble and which ones are insoluble. They also describe what chemicals can be dissolved and what chemicals cannot dissolve. These chemicals are them recorded on Solubility tables which list solubility and how soluble the chemicals are. According to Busch
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Blessing is a poem by Imtiaz Dharker and is set in a village in Pakistan. This is a descriptive poem‚ which uses imagery to illustrate sights and sounds‚ and creates an atmosphere of frantic joy. The poem also consists of some inconsistent usage of end-rhyme‚ followed by some usage of metaphors‚ personification‚ simile‚ assonance and alliteration. The poet uses free verse in this poem to emphasize what the poem is about and to make the reader think about the situation and to think about the words
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