What is the ph of a solution with a hydronium concentration of 5.5×10−5 m?

a

explanation:

c. 75.7

i think that is the right

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.