b) State ONE characteristic of sodium hydroxide that prevents it from being used as a primary standard.

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.

The answer is falsegravitational force is independent of medium and depends only on the masses of the two objects and the distance between them.