Answer:
A. how cholesterol works in the body.
Explanation:
If we know the precise structure of a molecule (by X-ray crystallography), we can understand more about how it interacts with cells, proteins, and other molecules. It can also tell us what reactions it might take part in.
Therefore, we can learn more about how it works in the body and what activities it takes part in in the cells of the body.
Using the law of the conservation of mass, we can see that the aluminum metal would precipitate out of the solution as aluminum oxide.
<h3>What is the last step of the reaction?</h3>
Let us recall that the law of the conservation of mass states that mass can not be created nor destroyed but the mass can be converted from one form to another. In this case, we can see that the mass of the system would remain a constant. The mass of the system does not change this is in accordance with the law of the conservation of mass.
Hence, When performing the last step in the reaction, aluminum metal is added in excess to the solution. It reacts and dissolves, there would be a recovery of the aluminum as the oxide of the aluminum and by doing the mass of the system would remain the same but before and after the reaction.
Learn more about conservation of mass:brainly.com/question/13383562
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Planets form from particles in a disk of gas and dust, colliding and sticking together as they orbit the star. The planets nearest to the star tend to be rockier because the star's wind blows away their gases and because they are made of heavier materials attracted by the star's gravity.
