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18.10.2019 •
Chemistry
An oil company located a area of oil sands and began an analysis of two possible extraction methods. the oil is heavy oil, making pumping difficult. the first method of extraction analyzed was cold heavy oil production with sand (chops). the system is relatively chepas but extracts only about 10% of the available oil. it also produces a lot of contaminated sand that must be disposed of. the second method is steam assisted gravity drainage (sagd). sagd requires two parallel wells, one above the other. steam is pumped into the upper well. the steam heats the heavy oil, which drains into the lower well and is pumped out. this method extracts up to 80% of the oil but is very costly as it requires heating water to steam. no contaminated sand is produced, but oil-contaminated water is.
evaluate the costs and benefits of each of these extraction methods and identify any other factors that could affect the decision of which method to use:
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Ответ:
The cost for SAGD is the generation of steam.
The benefit for CHOPS is the low cost.
The benefit for SAGD is high extraction efficiency.
The other factors that could affect the decision are fuel cost and the required purity of the oil.
Ответ:
An organ is a group of two or more tissues working together to perform a function. Hence, the organ can be correctly matched with 3.
The tissue is a group of specialized cells working together to perform a specific function. Hence, tissue can be correctly matched with 5.
An organ system is a group of organs working together to perform a function. Hence, organ system can be correctly matched with 2.
An organism refers to a group of organ systems working together to exhibit the six characteristics of life. Hence, the organism can be correctly matched with 1.
A cell is the smallest fundamental unit of life. Hence, the cell can be correctly matched with 4.