Fractional distillation is the process in which the alkanes in petroleum can be partly separated. This is due to the petroleum having different boiling points. The process starts off with the heating of crude oil for it to vaporize. The vaporized crude oil is then fed into the bottom of the distillation tower. The resulting vapor rises through a vertical column. As the gases rises through the distillation tower, its temperature decreases. Thus, certain hydrocarbons begin to condense and run off at varying levels. Each level-specific condensed fraction contains hydrocarbon molecules that has a similar number of carbon atoms. These "cuts" of boiling point allow numerous hydrocarbons to be separated out in a single process. The cooling of the tower height allows for the separation. Subsequent to the refinement, individual fuels may undergo more refinement to remove existing contaminants or substances so as to improve the quality of the fuel through cracking.

6 0

4 years ago

Please help . Thank you so much....

cestrela7 [59]

Answer:

$\boxed{8900; 61 \, \%}$

Explanation:

The total estimated population (P) is

$P = \text{115 ha} \times \dfrac{\text{ 77 beetles}}{\text{1 ha}} = \textbf{8900 beetles}\\\\\begin{array}{rcl}\text{ \% K} & = & \dfrac{\text{Population}}{K} \times 100 \, \% \\\\& = & \dfrac{8900}{14 600} \times 100 \, \% \\\\ & = & \mathbf{61 \, \%}\\\end{array}\\\text{The population is now at }\boxed{\mathbf{61 \, \%}} \text{ of carrying capacity}$

8 0

4 years ago

Three facts about DNA structure replication

statuscvo [17]

Hey friend!
Let's figure this out!

DNA replication is the process by which DNA makes a copy of itself during cell division. The first step in DNA replication is to ‘unzip’ the double helix structure of the DNA molecule. DNA replication is self-complementary, and it does not need a third party. The two strands of a DNA act as parents and work as a template to synthesize the two daughters of DNA. According to an estimate, there are nearly 3 billion DNA bases in our genome, and during DNA replication they all replicate. Mutation can cause changes in DNA bases only, but it can be one or even more than one basis.

Hope this helps!

7 0

4 years ago

Mistletoe is a green plant that can make its own food, but also derives food from the mesquite tree on which it lives. In this w

Natali5045456 [20]

Answer:

1. Mistletoe is parasitic to the mesquite tree, it steals from the tree without giving anything valuable back to it. In this case, only the mistletoe gains an advantage.

2. If the mistletoe population on the tree were to increase, the mistletoe would probably end up slowly killing the tree. I say this because its a parasite to the tree. Its constantly stealing water and valuable minerals that it needs and doesnt give back anything that could help the tree. With all the water and minerals being stolen and an uneven rate with no way for the tree to replenish it all quickly enough it'll die.

3. Its parasitic since the mistletoe just takes and takes harmfully

7 0

3 years ago