Given the incomplete equation representing a reaction: 2c6h14 + o2 → 12co2 + 14h2o what is the coefficient of o2 when the equation is completely balanced using the smallest whole-number coefficients?

Answer : The coefficient of used is, 19

Explanation :

Law of conservation of matter : It states that the number of atoms of each element on reactant side should be equal to the product side in the chemical reaction.

In the unbalanced reaction, the number of atoms of hydrogen and carbon is balanced but the number of atoms of oxygen are not balanced. As, there are 2 number of atoms of oxygen on reactant side and there are 38 number of atoms of oxygen on product side. So, for the balanced oxygen we multiply the reactant oxygen by the whole number 19.

The given balanced reaction will be,

Hence, the smallest whole-number coefficient of  used for balanced chemical reaction is, 19

explanation:

the largest database of organic compounds lists about 10 million substances, which include compounds originating from living organisms and those synthesized by chemists. the number of potential organic compounds has been estimated at 1060—an astronomically high number. the existence of so many organic molecules is a consequence of the ability of carbon atoms to form up to four strong bonds to other carbon atoms, resulting in chains and rings of many different sizes, shapes, and complexities. the simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons. even though they are composed of only two types of atoms, there is a wide variety of hydrocarbons because they may consist of varying lengths of chains, branched chains, and rings of carbon atoms, or combinations of these structures. in addition, hydrocarbons may differ in the types of carbon-carbon bonds present in their molecules. many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. we use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil. the familiar plastics polyethylene, polypropylene, and polystyrene are also hydrocarbons. we can distinguish several types of hydrocarbons by differences in the bonding between carbon atoms. this leads to differences in geometries and in the hybridization of the carbon orbitals.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.