Assume That Acid Rain Has Lowered the PH of a Particular

question 40

Multiple Choice

Assume that acid rain has lowered the pH of a particular lake to pH 4.0. What is the hydroxyl ion concentration of this lake?

• A) 1 × 10⁻¹⁰ mol of hydroxyl ion per liter of lake water
• B) 1 × 10⁻⁴ mol of hydroxyl ion per liter of lake water
• C) 10.0 M with regard to hydroxyl ion concentration
• D) 4.0 M with regard to hydroxyl ion concentration
• E) 1 × 10⁻⁴ mol of hydroxyl ion per liter of lake water and 4.0 M with regard to hydrogen ion concentration

---

Definitions:

Nerve Impulses

Electrical signals that transmit information between neurons, allowing for communication throughout the nervous system.

Green-Sensitive Cones

Photoreceptor cells in the retina that are most sensitive to green wavelengths of light, playing a key role in color vision.

Red-Sensitive Cones

Photoreceptor cells in the retina that are particularly responsive to red wavelengths of light, playing a critical role in color vision.

Normal Color Vision

The ability to perceive colors accurately and differentiate between them, based on normal functioning of the cone cells in the retina.