Which of the following combinations cannot produce a buffer solution? Select all that apply. NH3 and (NH4)2SO4HNO2 and KNO2HOCl and NaClH2SO4 and Na2SO4HClO4 and NaClO4HF and NaFHCN and LiCNNH4Cl and NaOH

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull