How to find the number of atoms?
To find the number of atoms in a given sample, you can follow these steps:

1. Determine the type of element:
- Identify the element for which you want to find the number of atoms.

2. Find the atomic mass:
- Look up the atomic mass of the element on the periodic table. This value represents the average mass of one atom of the element in atomic mass units (amu).

3. Convert the mass of the sample to moles:
- Divide the mass of the sample by the molar mass of the element to convert it to moles. This step is necessary because the atomic mass is given in terms of moles.

4. Use Avogadro's number:
- Avogadro's number is a constant that represents the number of atoms in one mole of a substance, which is approximately 6.022 x 10^23 atoms/mol.

5. Calculate the number of atoms:
- Multiply the number of moles of the element by Avogadro's number to find the total number of atoms in the sample.
By following these steps, you can accurately determine the number of atoms in a given sample of an element.