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Concept explainers
How many atoms of each element are expressed by the following formulas? (Hint: Pay special attention to counting elements within parentheses.)
(a)
(b)
(c)
(d)
![Check Mark](/static/check-mark.png)
Interpretation: Number of atoms of each element in given formula is to be determined.
Concept Introduction:
Atoms are composed of tiny particles and these tiny particles are known as protons, electrons, and neutrons.
The substances which are unable to be degraded into simpler substances are known as atoms.
Elements are made up of one type of atoms. Elements join together to make molecules.
Atoms of different elements join together to form compound. All compounds are molecules but all molecules are not compounds.
Answer to Problem 1PE
Solution:
(a)
(b)
(c)
(d)
Explanation of Solution
a)
The formula-
Hence, number of atoms in each element in
b)
The formula
Hence, number of atoms in each element in
c)
The formula
Hence, number of atoms in each element in
d)
Hence, number of atoms in each element in
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Chapter 2 Solutions
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