Chemical a. is caused by freezing b. breaks apart rocks by physical process c. occurs when chemical reactions dissolve or change the minerals in rocks d. none above

The correct choice is C)

Occurs when chemical reactions dissolve or change the minerals in rocks

Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals and soluble salts. Water, and many chemical compounds found in water are the main agents of chemical weathering. These reactions occur particularly when the water is slightly acidic.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.