Question

parment hardness of water is due to​

Answer 1

Answer:

Permanent hardness is hardness (mineral content) that cannot be removed by boiling. When this is the case, it is usually caused by the presence of calcium sulfate and/or magnesium sulfates in the water, which do not precipitate out as the temperature increases.

Explanation:

hope it HELPED

Answer 2

Answer:

presence of calcium sulfate and/or magnesium sulfates in the water causes permanent hardness of water