The mass of a quantity of nicl2
is 24.6 g. how many formula units are in the sample?
a. 1.1 3 1023 nicl2
formula units
b. 1.9 3 1027 nicl2
formula units
c. 3.2 3 1023 nicl2
formula units
d. 5.3 3 10–21 nicl2
formula units

A0.10 m aqueous solution of sodium sulfate is a better conductor of electricity than a 0.10 m aqueous solution of sodium chloride. which of the following best explains this observation? (a) sodium sulfate is more soluble in water than sodium chloride. (b) sodium sulfate has a higher molar mass than sodium chloride. (c) to prepare a given volume of 0.10 m solution, the mass of sodium sulfate needed is more than twice the mass of sodium chloride needed. (d) more moles of ions are present in a given volume of 0.10 m sodium sulfate than in the same volume of 0.10 m sodium chloride. (e) the degree of dissociation of sodium sulfate in solution is significantly greater than that of sodium chloride.