Answer:
<h2>"resonance" refers to the idea that molecules are resonating rapidly between different bonding patterns. </h2>
Explanation:
This is the statement that defines resonance phenomenon.
In chemistry, resonance refers to some way of describing certain bonds, with the construction of resonance structures. This definition is often used to explain delocalised electrons that cannot be explained with covalent bonds.
In the ocean, solar energy is rapidly absorbed or reflected in the upper surface, leaving little energy to penetrate deeper, and so deeper water is not heated (this also explains the lack of light deep in the ocean). Additionally, warm water is less dense than cold water, and so cold water will sink while warm water floats above it.
Thus, temperature of the ocean also varies from top to bottom, giving a vertical structure to most of the ocean. This vertical structure has a large impact on how life is distributed in the ocean.
This is not the best way to organize a periodic table because two elements might have similar atomic mass.
<h3>What is periodic table?</h3>
Periodic table is a chart in which arrangement of chemical elements are done.
In the early periodic table elements are arranged on the basis of their atomic masses, while after sometime Moseley arranged the periodic table on the basis of atomic number as he proposed that properties of an element is justified on the basis of number if electrons.
And mass of two substances may be same so it is difficult to differentiate between them.
Hence, two elements might have similar atomic mass.
To know more about periodic table, visit the below link:
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Answer: Option (a) is correct.
Explanation:
Molecules of sugar given = 
According to Avogadro's number it is known that 1 mole contains 
.
Therefore, calculate the moles of sugar present in the sample as follows.
Number of moles = 
= 0.25 mol
Thus, the moles of sugar present in the sample is 0.25 mol.
