Chemistry, 06.07.2019 00:00 kayleigh88

Which statement best describes how chemical equations demonstrate conservation of mass? a. the number of reactants is the same as the number of products. b. the compounds are the same on each side of the reaction. c. the number of atoms of each element is the same on each side of the equation. d. the state of matter is the same on each side of the equation.

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Answer from: UnusualKc8513

The number of atoms of each element is the same on each side of the equation

Answer from: amandaparrish2323

C. The number of atoms of each element is the same on each side of the equation.

Explanation:

The conservation of mass states that the initial mass must be equal to the final mass or the mass of reactants must be equal to the mass of the products.

In a balanced chemical equation, the number of atoms of each element must be equal in both sides of the equation (reactants and products). The mass of the compound is the molar mass multiplied by the number of moles presented. And the molar mass will be the sum of the molar mass of each atom multiplied by its quantity in the compound.

Thus, because the number of atoms of each element is the same on each side of the equation it's proved that the mass is conserved.

Answer from: Quest

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:

Answer from: Quest

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