Which statement best describes a solution?

A. a mixture consisting of minute particles suspended in a medium that start moving about as soon as the mixing process stops

B. a mixture consisting of larger particles suspended in a medium that start settling down as soon as the mixing process stops

C. a mixture having a uniform composition where the components can't be seen separately and all components are in the same state

D. a mixture having a uniform composition but the components can be seen separately and all components are in a different state

It's C

Explanation:

A solution is defined as a homogeneous mixture in which solute particles are evenly distributed into the solvent.

A solution is a clear solution whose particles cannot be separated out as they are all present in same state.

On the other hand, a mixture in which particles are unevenly distributed into the solvent is known as a heterogeneous mixture.

For example, sand in water is a heterogeneous mixture.

Particles of a heterogeneous mixture can be separated out generally through filtration. This is because these particles are not present in same state.

Thus, we can conclude that the statement a mixture having a uniform composition where the components can't be seen separately and all components are in the same state, best describes a solution.

"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"