Which of the following substances should you use to make a pH 7.0 buffer? Part A
C3H NH* (pKg = 5.2)
None of these options are correct.
OHCrO4 (pka = 6.5)
C4H4ONH2* (pkg = 8.5)
H202 (pka = 11.7)
HCN (pKa = 9.2)

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need

Stage in which a star’s outer layers have started to cool and grow outward?