Question 13
h3o+ units are also known as
a)hydrogen ions
b)hydronium ions
c)hydroxide ions
d)hydroxyl groups

H3O+ units are also known as hydronium ions. Hence the answer is option B.  

Explanation:

Hydronium ions is defined as ions that contains proteinated ions and it is present in all the aqua solutions. These ions are abundant in protons and they have less electrons in them. It is because they had donated electrons to their other forms which gives a positive sign to the ion.

Hydronium ion is produced when an Arrhenius acid is mixed with dihydrogen oxide. This iron is found in universe like in comets, interstellar things, etc.  

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )