Using equation 18-5 and the pkin value you found, determine the ratio [in-]/[hin] at the ph in the middle of the range you studied (i. e., ph = 6.0 for bromocresol purple, ph = 7.0 for bromothymol blue, and ph = 7.7 for phenol red). show how you accomplished this. draw a conclusion about the relative concentrations of in- and hin at ph values very close to the pkin of the indicator.

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Which is a difference between molecular compounds and ionic compounds? select the correct answer below: question 5 options: molecular compounds typically form between a metal and a nonmetal, while ionic compounds typically form between nonmetals. molecular compounds result from the transfer of electrons between atoms to form ions, while ionic compounds result from the sharing of electrons between neutral atoms. molecular compounds are formed of discrete, neutral molecules, while ionic compounds are formed of large repeating arrays of opposite charges. molecular compounds have high melting points and high boiling points, while ionic

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18