The ph is a measure of the concentration of the hydrogen ion (h+) in water. highly acidic water has a very high h+ concentration, while basic water has very low h+ concentrations. the ph scale is a logarithmic scale, such that a difference of one ph unit means a 10-fold difference in h+ concentration. the mathematical relationship between ph and h+ concentration ([h+]) is

ph = –log [h+] or [h+] = 10-ph where [h+] is in moles per liter.

use a scientific calculator to calculate [h+] for the following ph values:

7 (a neutral solution)

5.6 (unpolluted rainwater)

3.7 (first acid rain sample in north america)

how many times higher is the concentration of h+ in the hubbard brook sample than in unpolluted rainwater?

What is the difference between self-pollination and cross-pollination? question 2 options: self-pollination leads to the creation of a fruit. cross-pollination does not. during cross-pollination, ovules are carried from one plant to another plant.. during self-pollination the ovules stay on the same plant. during cross-pollination, ovules are carried from one plant to another plant.. during self-pollination the ovules stay on the same plant. during cross-pollination the pollen grains are carried from one plant to another plant. during self-pollination the pollen and ovules are from the same plant. during cross-pollination, the pollen grains travel from the stigma to the anthers. during self-pollination, the pollen grains travel from the anthers to the stigma.

Adoctor is trying to diagnose a patient with dry skin. which of the following resources would be the most ? a magazine ad about soft skin a growth chart online articles about dry skin medical books

The fascicles of the deltoid are ; the fascicles of the pectoralis parallel; bipennate fusiform; unipennate multipennate; triangular bipennate; fusiform