cxttiemsp021
28.06.2019 •
Chemistry
How many atoms are in 35.5 g of chlorine? a. 3 × 10^23 atoms b. 6.02 × 10^23 atoms c. 1.2 × 10^24 atoms d. 3 × 10^24 atoms (not d)
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Ответ:
Option (B) is the correct answer.
Explanation:
According to Avogadro's number, one mole of a substance contains atoms or molecules.
As molar mass of chlorine is 35.5 g/mol. Hence, calculate its number of moles as follows.
No. of moles =
=
= 1 mol
Therefore, number of atoms present in 1.01 mol are calculated as follows.
atoms/mol
= atoms
Therefore, we can conclude that there are atoms in 35.5 g of chlorine.
Ответ: