Answer:
Are microscopic
Are single celled
Have shapes that include sphere, rod, and spiral
Do not have nuclei and membrane-bound organelles
Answer: It's only one proton in the middle of the red circle there's nothing outside it.
Explanation: I'm not sure sorry :|
hope this helps
Answer:
Carbon dioxide
Explanation:
<em> laboratory to have a pH of less than 7.0.</em>
Carbon (IV) oxide in the atmosphere is capable of dissolving into the distilled water to form a weak acid. Any pH that is less than 7.0 is acidic while any pH above 7.0 is alkaline or basic.
First, the carbon (IV) oxide enters the water through an equilibrium with the atmosphere:

Thereafter, aqueous carbon (IV) oxide can then react with water to form a weak carbonic acid:

C.Ions with greater charge are more soluble in water.
Explanation:
Compounds with small ions tend to be less soluble than those with large ions.
The solubility of a compound is the result of a competition. The ions in the compound attract each other, and the water molecules attract the ions.
If the water molecules have a greater attraction to the ions than ions have for each other, then the compound will be soluble in water.
Compounds with small ions are less soluble than compounds with large ions. Small ions are closer to each other, so they have strong attractive forces. It is more difficult for the water to break them apart, so they are less soluble.