# What is the mass percent of sodium in NaCl?

Jun 9, 2016

Na = 39.33% of NaCl

#### Explanation:

Begin by finding the mass of the $N a C l$ molecule.

$N a = 22.99$
$C l = 35.45$

$N a C l = 58.44$

Now divide the mass of sodium by the mass of the molecule to determine the percent of sodium.

$\frac{22.99}{58.44} = 0.3933$

Na = 39.33% of NaCl