I believe it would be the last one because you can use the molar mass of HCl to find the number of moles, then use Avogadro’s number to find the number of atoms
Hope this helps!
Answer:
The NH3 + with a PKa = 9.9
Explanation:
The Pka is a mathematical expression to express the dissociation grade of a substance in a solution, that means with a substance with a pKa small is a strong acid, and in this case since the solution pH is 8, that mean that the substance with high pKa ( lower acid strength) will predominate in a pH of 8.
A(C)+A(F)+A(Br)+A(O)=12.01+19.00+79.90+16.00=126.91
n=381.01/126.91= 3
C₃F₃Br₃O₃
I think it might be Ecdysozoa but I’m not sure