Un gramo de oro (Au), en forma cúbica (0,37 cm cada lado) puede ser estirado formando un alambre de 20 µm de diámetro (más delgado que un cabello) y 160 m de longitud. Además, un gramo de oro se puede estirar formando una lámina de 1 m2 y 70 nm de espesor. ¿Cómo se llaman estas propiedades?

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 :