B. H2CO3
C. H2SO4
D. H3BO3
Answer: Option (C) is the correct answer.
Explanation:
An acid which is able to dissociate completely into ions in water is known as a strong acid.
For example,
Therefore, sulfuric acid is a strong acid as it dissociates completely into ions in water.
Whereas , , and are all weak acids as they dissociates slightly in water as follows.
Morover, sufuric acid upon dissociation is giving 2 hydrogen ions and rest all are giving one hydrogen ion.
Thus, we can conclude that out of the given options has the largest concentration of hydronium [H3O+].
Answer:
variation in skin color.
Explanation:
The human skin color is determined genetically depending on the amount of melanin. However pigmentation can occur as a results of exposure to uv rays that causes induced pigmentation.
The sun emits two types of ultra violet rays which can reach can reach the skin namely the uva and uvb. Both type of rays can damage the skin if unprotected. Due to this there was evolution against the damaging rays. More melanin that provides a natural sunscreen to the people leaving in the tropic environment.
Answer:
The flagellated sperm would not be able to swim to the eggs for fertilization.
Explanation: I took the test and got it right. :)
B: an earthquake
C: a tsunami
D:continental-continental convergence
Answer:
The answer is part A
Explanation: