Is sugar (c6h12o6) and oxygen gas (o2) combine to form carbon dioxide (co2) and water (h2o) a chemical reaction?

The answer to your question is Yes, it is a chemical reaction

Explanation:

A chemical reaction is a process that involves a rearrangement of the atoms and molecules of the reactants to form products.

In your question, sugar and oxygen are transformed into carbon dioxide and water that process is the definition of a chemical reaction.

Reaction

                    C₆H₁₂O₆   +  9O₂   ⇒  6CO₂   +   6H₂O

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