To determine the number of atoms in a sample of bismuth (Bi), we need to use Avogadro's number, which is the number of atoms in one mole of a substance. Avogadro's number is approximately 6.022 x 10^23 atoms per mole.
First, we need to determine how many moles of bismuth are in the 15.5g sample. We can do this by dividing the mass of the sample by the molar mass of bismuth, which is approximately 208.98 g/mol.
moles of Bi = 15.5 g / 208.98 g/mol = 0.0742 mol
Next, we can use Avogadro's number to determine the number of atoms in the sample. We can do this by multiplying the number of moles by Avogadro's number.
number of atoms = 0.0742 mol x 6.022 x 10^23 atoms/mol = 4.46 x 10^22 atoms
Therefore, there are approximately 4.46 x 10^22 atoms in a 15.5g sample of bismuth (Bi).
~~~Harsha~~~