The Chemical Acidity of a Solution Is Measured in Units

question 142

Multiple Choice

The chemical acidity of a solution is measured in units of pH: , where is the hydrogen ion concentration in the solution. If a sample of rain has a pH of 3.4, how many times higher is its than pure water's, which has a pH of 7?

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Definitions:

Gas Exchange

The biological process through which organisms exchange oxygen and carbon dioxide with their surroundings, essential for respiration.

Buoyancy Of Water

The upward force exerted by water that opposes the weight of an object immersed in it, allowing it to float or seem lighter.

Spiracles

Spiracles are breathing openings found on the body of some animals, including insects and some arthropods, allowing air to enter the respiratory system.

Vascular Region

Parts of plants that are involved in the transport of nutrients and water, including the xylem and phloem.