Amixture is made of two or more materials that a. cannot be separated by any means. b. cannot be separated by physical means. c. can be separated by physical means. d. can only be separated by chemical means.

The answer is C

A mixture is a substance that is made up of two or more materials that can be separated by physical means.

Physical means of separating mixtures include sorting, evaporation, filtration, screening, magnetism, boiling, and chromatography.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"