What is a claim?
a. a statement that responds to and defends against something
b. a statement that takes a stand on a controversial issue
c. an analysis of a controversial issue using arguments
d. an analysis of a personal situation using opinions

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.