On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions

On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions

On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions

Explanation:

On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions

On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions

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:

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: