The impurities present in hard water, its effects on health, and the reason for being harmful are to be determined. Concept Introduction: Water is a common liquid that is present on the Earth. It is also known as universal solvent. It can dissolve a wide range of organic and inorganic solutes. Water is vital for the existence of all living animals. Without water, no life form can exist, it constitutes an important part of rivers, lakes, streams, clouds, snow and ice. Water is truly an unusual molecule such that being a low molar mass compound, it exists as a liquid at room temperature and has an anonymously high boiling point. Ice floats on water because it has a lower density than water. Water present as ground water contains salts of magnesium and calcium and is also known as hard water. Hard water prevents the action of soap and cannot be used for cleansing actions.

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Chapter 12, Problem 16E

Interpretation Introduction

Interpretation:

The impurities present in hard water, its effects on health, and the reason for being harmful are to be determined.

Concept Introduction:

Water is a common liquid that is present on the Earth.

It is also known as universal solvent. It can dissolve a wide range of organic and inorganic solutes.

Water is vital for the existence of all living animals. Without water, no life form can exist, it constitutes an important part of rivers, lakes, streams, clouds, snow and ice.

Water is truly an unusual molecule such that being a low molar mass compound, it exists as a liquid at room temperature and has an anonymously high boiling point.

Ice floats on water because it has a lower density than water.

Water present as ground water contains salts of magnesium and calcium and is also known as hard water.

Hard water prevents the action of soap and cannot be used for cleansing actions.

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