Separation by difference in particle size: Sieving: - Is a way pf separating mixtures of solids‚ or solids and liquids with different sized particles - The mixture is poured through a sieve and the particles smaller than the sieve pass through while the larger particles are trapped by the sieve - The are commonly used for cooking - E.g. a mixture of rice and water is poured through a sieve to capture rice and remove the water Filtration - Is a technique commonly used for mixtures of solids and liquid
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Conclusion: This lab experiment concluded that physical properties are instrumental in separating solids and liquids that are mixed. The physical property of magnetic pull proved very effective in separating out the iron filings at first‚ and from there‚ the solubility factor was everything. The fact that the salt and acid both dissolved but the sand didn’t made separating out the sand much easier. The tricky part was separating out the acid and the salt because both were soluble‚ but given that the properties
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Chapter 2 Review Question No. 7 What are the three primary CBIS functions that must be separated? Separating Systems Development from Computer Operations The two functions are inherently incompatible since consolidating these tasks encourages errors and frauds. Systems development and maintenance staff should not be allowed to perform tasks involving entering of data or running applications. Separating Database Administration from Other Functions Consolidating both tasks threaten database integrity
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To determination the partition coefficient of ethanoic acid between water and butan-2-ol. Procedure 1. The room temperature was recorded. 2. 15cm3 of the given aqueous ethanoic acid and 15cm3 of butan-2-ol were poured into a 100cm3 separating funnel‚ using suitable apparatus. The funnel was stoppered and was shook vigorously for 1 to 2 minutes. (The pressure in the funnel was released by occasionally opening the tap.) 3. 10cm3 of each layer was separated approximately. (The fraction
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Title: Preparation and isolation of an Ester Aim: To make an ester and purify it Background Theory: Esters are derived from carboxylic acids and alcohols with the presence of a catalyst. A carboxylic acid contains the -COOH group‚ and in an ester the hydrogen in this group is replaced by a hydrocarbon group of some kind. Sulfuric acid (H2SO4)is used as a catalyst for this reaction in order to accelerate the rate at which the product is formed. The general formula of an ester is RCOOR’ in
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1. Separating out the Iron: 2. Separating out the Sand: 3. Separating out the Benzoic Acid: 4. Separating out the Salt: Grams Percent of Mixture Weighing Dish 0.5 .5/6 * 100= 8.3% 10cm Paper 0.6 .6/6 * 100= 10% Iron 1.9 1.9/6 * 100= 31.7% Sand 1.1 1.1/6 * 100= 18.3% Benzoic Acid 0.5 .5/6 * 100= 8.3% Salt 1.4 1.4/6 * 100= 23.4% Total 6.0 100% Questions: 1. How did your proposed procedures or flow charts at the beginning of this experiment compare to the actual procedures
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Corporate Governance: Separating the CEO and the Chairman Roles Reference: Millstein Center Publication Name: D & O Diary Publication Date: Tuesday‚ April 14‚ 2009 Article by : Kevin LaCroix Article summary: Many voices are calling public companies to separate the Chairman and CEO functions and to make this model a default governance structure and many evidences shows advantages of that. Pushing to separate the two roles is not a new idea‚ but it has gained support from many sources lately
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Conjoined twins happen once in every 200‚000 live births (Maryland). Conjoined twins are identical twins whose bodies are joined in utero. Most are stillborn and others are born with severe abnormalities that make living a normal life almost impossible. The survival rate of conjoined twins is between 5 percent and 25 percent (Maryland). The most common form of conjoined twins is thoracopagus twins. These types of twins share the same heart. Some of the other types of conjoined twins include omphalopagus
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generalizations about gender attributes and the role of an individual‚ which authors use to describe and evaluate the behaviors of their characters. I’ll be comparing and contrasting gender stereotypes in “a sorrowful woman” by Gayle Godwin and “Separating” by John Updike. The division of labor according to gender leads to stereotypes that rationalize the division of labor. For example‚ because women disproportionately occupy roles that require nurturing behavior‚ people come to see women as a group
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stream of concern and evaporation or condensation of single- or multicomponent fluid streams. In a few heat exchangers‚ the fluids exchanging heat are in direct contact. In most heat exchangers‚ heat transfer between fluids takes place through a separating wall or into and out of a wall in a transient manner. In many heat exchangers‚the fluids are separated by a heat transfer surface‚ and ideally they do not mix or leak. Such exchangers are referred to as direct transfer type‚ or simply recuperators
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