What is the mass in grams of a 8.4 mole sample of iron?

mass in grams of 8.4 mole of Fe = 469.098  grams

Explanation:

Iron is a metal substance. The molecular mass of Iron is 55.845 gram. This means 1 mole of Iron substance contains 55.845 grams.

The chemical formula of Iron is Fe.

Atomic mass of Iron = 55.845 g

Since, 1 mole of Iron is 55.845 g

8.4 mole is ?

cross multiply

mass in grams of 8.4 mole of Fe = 8.4 × 55.845/1

mass in grams of 8.4 mole of Fe = 8.4 × 55.845/1

mass in grams of 8.4 mole of Fe = 469.098  grams

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: