25 grams NaCl * 1 mole NaCl per = .43 moles NaCl 58.44 grams NaCl (molecular mass)
Molar Mass NaCl is 58.5g, 39.3% Na (5.90g), Molar Mass Na is 23.0g, 5.90/23.0 = 0.256 moles
18,024 364 grams
Approx. 0,007 moles.
1 mole NaCl = 58.442g NaCl (the atomic weight of Na and Cl in grams) 13g NaCl x (1mol NaCl/58.442g NaCl) = 0.22mol NaCl