Which of the following is an example of chemical weathering?
a. waves washing over rocks on the beach
b. acid rain falling on sidewalks
c. ice forming in the cracks of rocks
d. wind blowing against rocks

The Answer is (B) on Edge..!

Explanation:

B... - Acid rain falling on sidewalks.!!

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.

the answer is barium and copper bromide