Which solution is a homogeneous mixture?
sand and water
salt and water
salad dressing
soil

Salt and water is a homogeneous mixture. Sand and water,salad dressing,soil are heterogeneous mixtures.

Answer : The correct option is, salt and water  

Explanation :

Heterogeneous mixtures : It is a type of mixture in which the appearance of the solution throughout is non-uniformly and the particle size or shapes are also different.Homogeneous mixtures : It is a type of mixture in which the appearance of the solution throughout uniformly and the particle size or shapes are not different.

Sand and water : It is a heterogeneous mixture in which the particle size of the sand and water are different. The mixture of sand and water can be separated by the physical method like filtration.

Salt and water : It is a homogeneous mixture in which the salt is completely dissolves in the water. The mixture of salt and water can not be separated by the physical method.

Salad dressing  : It is a heterogeneous mixture in which the particle size of the salad are different. The Salad dressing can be separated by the physical method.

Soil : It is a heterogeneous mixture in which the particle size of the solit are different. The soil can be separated by the physical method.

Hence, the salt and water solution is a homogeneous mixture.

The answer is 323 g.

Answer:

a. energy is absorbed in the reaction.

explanation:

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.