the decomposition of NO gas and oxygen gas. the decomposition is determined to occur at half lives of $12,24,$ and $48$ seconds. if the pressure of NO$2$ is intially $746$ torr in a $5$ L container at $383$ c a$.$ write the rate law b what is teh concentration of NO$2$ after $24$ seconds c what is the molar concentration of No$2$ after $96$ seconds