What is the molar mass of sodium hydroxide?

1 Answer
Truong-Son N.
May 13, 2016

The molecular molar mass consists of the atomic masses of each atom.

Sodium hydroxide is "NaOH". Thus, its molar mass involves:

  • "M"_"Na" = "22.989 g/mol"
  • "M"_"O" = "15.999 g/mol"
  • "M"_"H" = "1.0079 g/mol"

So, its molar mass is 22.989 + 15.999 + 1.0079 = color(blue)("39.996 g/mol") to 5 sig figs.

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