The mole fraction of NaCl in an aqueous solution is 0.132. How many moles of NaCl are present in 1 mole of this solution? Molar Mass
NaCl: 58.44 g/mol
H2O: 18.016 g/mol

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

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