A soda can is made from aluminum metal. To determine how many atoms of this element is present in a certain mass of the can, we need to convert the mass into units of moles by using the atomic mass of aluminum which is 26.98 g per mol. Then, we use the Avogadro's number. It represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles or vice versa.
moles Al = 15.1 g Al ( 1 mol / 26.98 g ) = 0.56 mol Al
atoms Al = 0.56 mol Al ( 6.022x10^23 atoms / 1 mol ) = 3.32x10^23 atoms
OPTION A would be the closest.
Xylem transports and stores water and water-soluble nutrients.
Phloem transports sugars, proteins, and other organic molecules.
<span>A clone representing myostatin would be found in the genomic library made from muscle approximately one time out of every sixty thousand. Under the given conditions, the human genome and average insert size, the frequency of that particular type of clone can be estimated to be very near the probability of 1/60,000. This can be expressed either in fraction form or in descriptive words and maintain the same level of meaning.</span>
Evolution is a broader use of language terminology. Biological evolution refers to the evolvement of a particular biological species such as an animal or a plant. On the other hand evolution can refer to the evolution of anything. There are no constraints on what it is being preferred to.
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Oxygen and glucose are both reactants in the process of cellular respiration.
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