Determine whether or not each combination of substances can be used to create a buffer. 0.1 M HCl, 0.1 M KCl Choose... 1 M Na2HPO4, 1 M NaH2PO4 Choose... 0.05 M HNO2, 0.05 M NaNO2 Choose... 0.1 M NH4Cl, 0.1 M HCl Choose... 0.4 M KOH, 0.2 M NaOH Choose...

The answer to this problem is. 67

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.