1.2g of NaCl as used to prepare 200 ml solution , what is the molar concentration of NaCl in solution ?

Answer 1

1.2 * 5 grams/ liter = 6 grams/liter

Na = 11 g/mol
Cl = 35.5 g/mol
Na Cl = 46.5 g/mol
6/46.5 = .129 M

Answer 2

Na is 23 not 11; therefore, molar mass NaCl = about 58.5
mols NaCl = grams/molar mass = 1.2/58.5 = about 0.02 mols.
M = mols/L = about 0.02 mols/0.2 L = ?

Answer 3

OOps sorry, thinking atomic number :(