All of the following are therapeutic interventions for gingivitis except one. Which one is the exception?

The technique for calculus removal with a curet involves all of the following except one, which is the exception? 

There is too much supragingival and subgingival calculus present in a patient’s mouth for the clinician to remove in a single appointment. Since all the calculus deposits cannot be removed in one appointment, what is the best manner for the clinician to proceed with calculus removal?

According to the dental hygiene process of care, when evaluation reveals that the client has made little progress toward goal attainment, the dental hygienist does all of the following except which one?

The mechanism of action for power instruments includes frequency and amplitude.  The measure of how far the powered working-end moves back and forth is defined as 

Which molecule contains a triple bond? A) HCN B) F2 C)O2 D) H2CO

What orbital hybridization is expected for the central atom in a molecule with a trigonal planar geometry? A) sp B) sp2 C) sp3 D) none of the above

What are the names of the ions Ba2+, Sn2+, and Se2-?

What is the formula for copper(II) nitrate?            (a) CuNO3      (b) Cu2NO3     (c) CuNO2      (d) Cu2NO2     (e) Cu(NO3)2

Which one of the following is expected to exhibit resonance? A) CO2 B) HCN C) NO2- D) NH4+