Question

For a Cu-30% wt% Ni alloy, what fraction of the atomic sites does Ni occupy?

Answer 1

To determine the fraction of atomic sites Ni occupies in a Cu-30% wt% Ni alloy, one must calculate the mole percentages based on atomic masses and then find the mole fraction of Ni atoms.

Step-by-step explanation:

The question of determining the fraction of atomic sites occupied by Ni in a Cu-30% wt% Ni alloy involves using atomic masses and weight percentages to compute the relative number of atoms. The atomic mass of copper (Cu) is 63.546 g/mol and that of nickel (Ni) is 58.6934 g/mol. To find the fraction of sites occupied by Ni, the following steps must be taken:

1. Convert weight percentages to mole percentages.
2. Calculate the moles of each element using their respective atomic masses.
3. Calculate the fraction of Ni atoms with respect to the total number of atoms.

It's important to note that the atomic weight of Ni has been approximated in the question. By following these steps, one can determine the atom fraction of Ni in the alloy.