3. Before tackling this problem, be sure you know how to find the antilog of a number using a scientific calculator. A solution has a pH of 5.4. Write the formula you will use to calculate the [H ] and then show all your work leading to the determination of [H ].

3.98 ×10-6 mol dm-3

Explanation:

The pH is defined as the negative logarithm of hydrogen ion concentration to base ten. This implies that when we want to obtain the concentration of hydrogen ion in moldm-3 and all we have is the pH of the solution, we simply take the antilog of the negative value of the given pH value. This follows from the definition of pH above. All these steps are shown in the image attached.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.