Answer
Yes.
Work Step by Step
To show this, we will put everything into molar quantities.
First Sample:
Na: 6.98gx1mol/22.99g = 0.301mol
Cl: 10.7x1mol/35.45g = 0.301mol
Yes. For a NaCl solution there are 0.301 mol of both elements.
Second Sample:
Na: 11.2gx1mol/22.99g = 0.487mol
Cl: 17.3gx1mol/35.45g = 0.488 mol.
Yes. For a NaCl solution there are roughly 0.488 of both elements.