Natural selection requires variation between individuals. Mutations and reproduction increase genetic variation in a population. Natural selection occurs when environmental pressures favor certain traits that are passed on to offspring.
Mater means mom
The mater has kept the house in London
If you meant matter
There is not a lot of matter in an apple compared to the matter in a person.
Answer: It completely dissociates in water is a characteristic of strong acid.
Explanation:
An acid which dissociates completely to give hydrogen ions is called a strong acid.
For example, HCl is a strong acid and it dissociates completely as follows.
Strong acids are able to conduct electricity in water as more number of ions are present in the solution as compared to the ions present in a solution of weak acid.
Strong acids increase the concentration of ions.
Thus, we can conclude that it completely dissociates in water is a characteristic of strong acid.
a) m(H₂C₂O₄) = 15.5 g.
n(H₂C₂O₄) = m(H₂C₂O₄) ÷ M(H₂C₂O₄).
n(H₂C₂O₄) = 15.5 g ÷ 90 g/mol.
n(H₂C₂O₄) = 0.172 mol; amount of substance.
N(H₂C₂O₄) = n(H₂C₂O₄) · Na (Avogadro constant).
N(H₂C₂O₄) = 0.172 mol · 6.022·10²³ 1/mol.
N(H₂C₂O₄) = 1.037·10²³; number of molecules.
b) In one molecule of oxalic acid there are two atoms of carbon:
N(C) = 2 · N(H₂C₂O₄).
N(C) = 2 · 1.037·10²³.
N(C) = 2.074·10²³; number of carbon atoms.
What are you looking for? bc i can’t see what you are asking