How do you know that K, an alkali metal is very reactive? a. It conducts heat
b. It conducts electricity
C. It is a soft and shiny metal
d. It contains one valence electron

it contains one valence electron

false

because it does not have the potential to be entirely used up

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 :