need to know what is the theoretical moles of NaCl

Any number you choose. The molar mass is about 58.5 if that is what you mean?

To determine the theoretical moles of NaCl, you need to know the mass or the number of particles of NaCl you have.

If you have the mass of NaCl, you can use the formula:

moles = mass / molar mass

In this case, the molar mass of NaCl is approximately 58.5 g/mol.

So, if you have the mass of NaCl, divide the given mass by 58.5 g/mol to get the number of moles.

If you have the number of particles (atoms, molecules, or ions) of NaCl, you can use Avogadro's number to convert the particles to moles.

moles = number of particles / Avogadro's number

Avogadro's number is approximately 6.022 x 10^23 particles/mol.

So, if you have the number of particles, divide the given number by Avogadro's number to calculate the moles of NaCl.

Please provide the specific information (mass or number of particles) you have so that I can assist you in calculating the theoretical moles of NaCl more accurately.