Answer :
(a) The number of grams in 1 amu is,
(b) The number of atoms in a pound-mole of a substance is,
Explanation :
<u>Part (a) : </u>
As, we know that:
1 gram = amu
Now we have to determine the number of grams in 1 amu.
As, amu = 1 gram
So, 1 amu =
Thus, the number of grams in 1 amu is,
<u>Part (b) :</u>
As we know that the value of gram-mole is same in pound-mole.
Now we have to determine the number of atoms in a pound-mole of a substance.
Number of atoms = Pound-mole × Avogadro's number
As, 1 Pound-mole = 453.6 gram-mol
Avogadro's number =
Number of atoms = 1 pound-mol ×
Number of atoms = 453.6 gram-mol ×
Number of atoms =
Thus, the number of atoms in a pound-mole of a substance is,