What are the reactants and products in a chemical reaction?

Answer : The species present on the left side of the right arrow in the reaction are known as reactant and the species present on the right side of the right arrow in the reaction are known as product.

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of an individual elements present on reactant side must be equal to the product side.

The reactant and product species present in the reaction are separated by right arrow.

The species present on the left side of the right arrow in the reaction are known as reactant and the species present on the right side of the right arrow in the reaction are known as product.

For example :

This reaction is a balanced chemical reaction because in this reaction the number of atoms of an individual elements are equal on both side of the reaction.

In this reaction, and are the reactants and is the product.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j