The hardness of water is determined primarily by the amount of calcium and magnesium it contains. ... Instead of having higher levels of calcium and magnesium, soft water tends to have higher concentrations of sodium, or salt.
A covalent bond is a bond between 2 non metals, they share electrons. Ionic bonding occurs between a metal and a non-metal, and they transfer electrons.
<em>Calculate the molar fraction of NaClO in a commercial bleach solution that contains 3.62% by mass of NaClO in water</em>
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<h3>Further explanation</h3>
convert mass to mol
mol NaClO (MW=74.5 g/mol) :

mol H₂O (MW= 18 g/mol) :

Total mol :
0.0486 + 5.354 = 5.4026
mol fraction of NaClO :
