Answer:
6
Explanation:
The given reaction is aluminium with hydrochloric acid
2Al + 6HCl → 2AlCl3 + 3H2
the product is aluminium chloride and hydrogen gas.
We can clearly, calculate that there are 2*3=6 chlorine atoms in product side of the reaction.
Answer:
The retention factor, k is 2.49
Explanation:
According to the theory of High-Performance Liquid Chromatography (HPLC), the retention factor (or capacity), k, of a column is the ratio of the retention time of a retained analyte (toluene) to that of the un-retained solute (methane).
This implies that:
k = =
retention factor, k = 2.49.
Note that there is no unit for retention factor, as it is a ratio.
Mechanical waves need mediums. or else it isn't a mechanical wave
From the picture you are showing me, the last option is the correct one, it means dipeptide. Remember that a dipeptide is <span>a peptide composed of two amino-acid residues. And that is shown in the image. Hope this helps</span>
atomic fingerprint
Explanation:
The analogy is:
individual : identification card :: element : <u>atomic fingerprint</u>
An individual is represented and can easily be recognized by their respective identity cards. Most identification cards of people have their biodata which is composed of name, address, age, date of birth e.t.c. An identity card can solely be used to recognize and pick out a person.
Since the analogy seeks for a means to recognize elements, atomic fingerprints is good way;
- Atomic fingerprint is the emission or absorption spectra of an atom.
- It is a unique line of spectra that typifies an atom.
- Every atom have their respective spectra different from those of others.
- The atomic fingerprint can be used to identify an element.
learn more:
spectra lines of hydrogen brainly.com/question/1857156
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