Ha and hb are two strong monobasic acids. 25.0cm3 of 6.0mol/dm3 ha is mixed with 45.0cm3 of 3.0mol/dm3 hb. what is the h+ (aq) concentration in mol/dm3 in the resulting solution ? a 1.9 b 2.1 c 4.1 d 4.5 if anyone could explain how to reach an answer that would be so

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

l dont know l am s sorry

diaria maybe go see a doctor about that