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Design a distillation column to separate a mixture that contains 40% ethanol and 60% water by weight with a desired ethanol purity of 95%. The feed rate of the mixture is 100 kg/hr and the reflux ratio is 3:1. Determine the number of theoretical plates required and the height of the column. Assume that the total condenser and reboiler are both at 100°C and that the distillate leaving the column is 90% liquid and 10% vapor.
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1 day
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Chemical engineering
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Design a distillation column that separates a mixture of ethanol and water with a 95% ethanol purity and a production rate of 1000 liters per hour. The mixture contains 50% ethanol and 50% water by volume. The distillation column should operate at a pressure of 1 atm and a temperature range of 78-85°C. Assume that the feed enters the column as a saturated liquid and that the overhead product is 90% ethanol, while the bottom product is 5% ethanol. Determine the number of stages required and the reflux ratio for this system.
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2 days
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Chemical engineering
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A chemistry student performed a reaction that produced 2.0 grams of product. The theoretical yield for this reaction is 2.5 grams. Calculate the percent yield for this reaction.
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Jan 22
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Chemical reactions
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24
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What is the aim of discursive psychology?
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Jan 20
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Psychology
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4
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When applying the social learning theory in teaching, what should teachers consider?
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Jan 20
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Psychology
1
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6
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Who demonstrated the importance of ecological validity in research?
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Jan 20
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Psychology
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16
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When assessing community needs, what is the term for conducting an in-depth investigation?
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Jan 17
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Psychology
1
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67
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How do constructivist and behaviourism theories differ in their approach to learning?
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Jan 17
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Psychology
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35
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According to the cognitive behavioural approach, how might cognitive distortions affect mental health?
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Jan 16
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Psychology
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46
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What is the benefit of the biopsychosocial approach?
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Jan 15
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Psychology
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26
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According to Maslow, when are physiological needs the most fundamental?
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Jan 15
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Psychology
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24
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According to the theory of mind, how do people infer the mental states of others?
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Jan 15
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Psychology
1
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46
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What is the term for the spacing of individuals within a population?
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Jan 7
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Science
1
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22
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What is produced when sulfur and oxygen combine?
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Jan 6
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Science
1
answer
28
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The sum of the kinetic and potential energies of a system’s atoms and molecules is called what?
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Jan 2
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Science
1
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52
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The lifecycle of an ascomycete is characterized by the production of what during the sexual phase?
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Jan 2
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Science
1
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52
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On what basis are lipoproteins classified?
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Dec 31, 2024
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Science
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35
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Deserts are generally dry ecosystems having very little what?
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Dec 30, 2024
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Science
1
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7
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In which part of the ear are the vibrations amplified by the malleus, incus, and stapes?
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Dec 27, 2024
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Science
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20
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Distinguishing between homology and analogy is critical in reconstructing what?
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Dec 27, 2024
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Science
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