Explanation:
Hydrogen atoms contain 1 proton and 1 electron while being devoid of neutrons. When they lose their electron they form an ion or H+, a particle carrying a unit of positive charge. pH measures how basic or acidic a water-based solutions are, with a formula for pH is
pH = -log[H+].
...where pH is -base 10 log of the concentration of hydrogen ions within the solution.
Initial volume= 20 mL
Final volume= 600 mL
# of dilutions=
= 30
for a pH 2= [H+]= 
∴ [H+]= 
and pH is an antilog of [H+]= - log 
∴pH = 3.47
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Answer: C
Explanation: I'm not one hundred percent sure I know the context of this question, but biodiversity in an ecosystem means there's a wide variety of organisms, and a hotspot I assume would be an area that has an unusual amount of diversity.
Answer:
increased energy is not a symptom of depression
Answer:
The correct answer is - reciprocators.
Explanation:
Most people are normally reciprocators who only cooperates only when they see others doing cooperating. People generally cooperates only if other people do the same or help in in favor of the same thing.
Lucia behavior is the opposite of the reciprocators as Lucia cooperates with others irrespective behavior of the people.
Thus, the correct answer is - reciprocators.