1. How many grams of KClO₃ could be dissolved in 100 grams of water at 75 °C? 2. How many grams of NaNO₃ could be dissolved in 500 grams of water at 20°C?

18. A supersaturated solution of KNO₃ at 50°C contains 125 g of dissolved KNO₃ per 100 g of water. If a seed crystal was added, how much solid KNO₃ would precipitate?

19. How much NaNO₃ would precipitate when a solution containing 168 g of solute in 100 g of water was cooled from 80°C to 35°C?

20. If 150 g of NaCl was added to 200 g of water at 20°C, what would happen?

I don't care which one you answer I just need help

water   molecules stay close to each other through cohesion, the collective action of hydrogen bonds between water molecules. cohesion plants draw water upwards from the root through the stem's transport tubes (xylem) to the leaf. this transport occurs even in large trees and against gravity. transpiration, evaporation of water from plant leaves, creates a tension on water molecules being pulled up from the stem and roots.

water also has high (the attraction of one substance to another) properties because of its polar nature. adhesion of water molecules to plant cell walls counteract gravity while water is transported from roots to leaves.

water exhibits a very high surface tension when compared to other liquids. surface tension is a property of a liquid that holds the surface together and allows it to resist an external force. by capillary action, the water forms concave menisci inside the pores. the high surface tension of water pulls the concavity outwards, generating enough force to lift water from the roots to the leaves of plants.

thus, cohesion, along with adhesion and surface tension creates a capillary action that keeps water molecules interacting and moving through the plants out to the leaf cells.

therefore, option d) is the correct answer.

explanation:

ill try to . no promises tho.

explanation:

it's c. elements are placed in rows based on how may valencies electrons have.