How many atoms of K are present in 195.49 grams of K? 3.0110 × 1024 6.0220 × 1024 1.1772 × 1026 4.5797 × 1027
Chemistry · High School · Tue Nov 03 2020
Answered on
Given:
Given molar mass of Potassium = 195.49 grams/mol
Molar mass of Potassium =40 grams/mol
Determine the number of atoms in K.
Solution:
In order to determine the number of atoms, we simply need to use the general conversion method, and avogadros number, 6.023 x 10^23.
=(195.49 grams/mol)(6.023 x 10^23 / 40 grams/mol)
The unit grams per mol cancels.
= 2.94 x 10^24 atoms
Final answer:
= 2.94 x 10^24 atoms