A mixture a. Can always be separated using filtration
b. Contains substances that are not mixed in a specific ratio
c. Is made when two or more elements chemically combine with each other
d. All of the above

Which is an example of a highly unstable isotope that is often used in fission reactions?

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.

How do you interpret a chromatogram for what mixtures contain?