Chemistry, 24.08.2019 00:20 joellianamikhai3123
Abatch dryer removes water from a solid at a rate of 30 kg/hr during the constant rate period. critical moisture content is 0.25 kg h2o/kg dry solid. the equilibrium moisture content of the material is 0.035 kg h2o/kg dry solid. the drier is initially charged with 750 kg of total material, which contains 2 00 000 g of moisture. the final product should contain 0.08 kg h2o/kg dry solid. the falling rate period can be represented by a straight line. the total drying area is 5 m^2 .
1. draw a schematic diagram that depicts the process.
2. determine the total drying time to produce the product.
Answers: 1
Chemistry, 22.06.2019 00:10
Which of the following best describes the formation of plasma?
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Chemistry, 22.06.2019 07:30
The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.
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Chemistry, 22.06.2019 17:30
98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.
Answers: 3
Abatch dryer removes water from a solid at a rate of 30 kg/hr during the constant rate period. criti...
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