1.)In terms of water hardness, soft water has 0-75 mg/L CaCO3; whereas, very har

Question

1.)In terms of water hardness, soft water has 0-75 mg/L CaCO3; whereas, very hard water has >75 mg/L CaCO3.

Trure or false

2.)The units parts per million (ppm) are interchangeable with milligrams per liter (mg/L) when referring to mass concentration. Likewise, the units parts per billion (ppb) and parts per thousand (ppt) are used to describe concentration

True or false

3.)__________ is defined as a measure of the ability of water to neutralize acid or as the capacity of water to accept protons. It acts as a buffer that tends to stabilize and prevent fluctuations in pH.

A. An indicator

B. Reduction

C. Carbonation

D. Alkalinity

Substances that are ________ are capable of being mixed in all proportions.

A. mitigated

B. miscible

C. solvent

D. saturated

4.)Considering trends in water chemistry with urbanization of the landscape, temperature, nitrate concentration, phosphorus concentration, conductivity, and dissolved oxygen demand all with higher density of urban land . [Hint: answer should be increase or decrease.]  Answer:

6.)When water has a distinct taste but no odor, the taste might be the result of inorganic substances.

False

False

Explanation / Answer

1)False

Hardness is most commonly expressed as milligrams of calcium carbonate equivalent per liter. Water containing calcium carbonate at concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l, moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard

3)Alkalinity

Alkalinity is defined as the capacity of water to accept protons; it can also be defined as a measure of the ability of water to neutralize an acid. ... Alkalinity in water acts as a buffer that tends to stabilize and prevent fluctuations in pH.

. miscible

Capable of being mixed with another liquid in any proportion without separating

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