Which part of a chemical formula indicates the number of atoms of an element that make up a molecule? A. plus signs B. subscript
2 answers:
<u>Answer:</u> The correct answer is Option B.
<u>Explanation:</u>
For the given options:
<u>Option A:</u> Plus sign is written in a chemical equation to show the number of chemical species reacting or getting produced.
Option B: Subscript numbers are defined as the number of atoms of each element present in a compound.
For Example: In , 2 atoms of hydrogen element is there and 1 atom of oxygen element is there.
<u>Option C:</u> Coefficients are defined as the numbers which are written in front of the atoms or molecules in a chemical reaction. They represent the number of moles of substance in a chemical reaction.
<u>Option D:</u> Chemical symbols are used to write the short form of the elements.
Hence, the correct answer is Option B.
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Answer:
a) Schmidt number
Explanation:
Prandtl number in heat transfer is analogues to Schmidt number in mass transfer.
Prandtl number in heat transfer is the ration of momentum diffusivity to the heat diffusivity.
Whereas, Schmidt number in mass transfer is the ratio of momentum diffusivity to the mass diffusivity.