Some experiments were carried out to place the metals copper, nickel and silver in reactivity series order. Experiment 1: a piece of copper was placed in some green nickel(II) sulfate solution. There was no change to either the copper or the solution. Experiment 2: a coil of copper wire was suspended in some silver nitrate solution. A furry grey growth appeared on the copper wire, out of which grew spiky silvery crystals. The solution gradually turned from colourless to blue. a) Use this information to place copper, nickel and silver in reactivity series order, starting with the most reactive one. b) In another experiment, a piece of nickel was placed in some copper(II) sulfate solution. (i) Write down any one change that you would observe during this reaction. (ii) Write the full balanced equation for this reaction. (Assume that nickel(II) sulfate solution is formed.) (iii)Write the ionic equation for this reaction, and use it to explain which substance has been oxidised during the reaction.

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:

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

ugh fiel iente of insistí is did kiwis jaj

gold is my favorite solid.