Example #2: Preservatives, like salt, help keep food fresh. Katie made 12 loaves of bread using the same recipe and baking method. In 6 of them she used salt, in 6 of
them she used no salt. After the loaves were baked, she placed each of the loaves in a
plastic bad and left them close together on the counter in the kitchen. Each day she
looked at them to see if any mold had started to grow.
What is the control group?
What is the experimental group?
What is the independent variable?
What is the dependent variable?

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

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.