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 : The correct option is, (c) 79.62
Explanation :
The formula used for percent humidity is:
..........(1)
The formula used for relative humidity is:
...........(2)
where,
= partial pressure of water vapor
= vapor pressure of water
p = total pressure
First we have to calculate the partial pressure of water vapor by using equation 2.
Given:
Relative humidity = 80 % = 0.80
Now put all the given values in equation 2, we get:
Now we have to calculate the percent humidity by using equation 1.
Therefore, the percent humidity is 79.62 %