Use the atomic mass of potassium, k, 39.1 g/mol, and the formula n = mass / atomic-mass.
Where n is the number of moles.
n = 250.0 g / 39.1 g/mol = 6.3939 mol.
Now multiply by Avogadro number to find the number of atoms:
6.3939 mol * 6.02*1023 atoms/mol = 38.49 * 10^23 atoms = 3.849 * 10^24.
Answer: 3.85*10^24
Answer:
b
Explanation:
because i think it is right
<span>The correct answer among the choices given is option A. Elements are
distinguished from compounds. An element is a pure chemical substance which is
from a same atom while compounds are from different elements. It contains atoms
of different elements.</span>
Explanation:
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