Which element has an atomic number of 16?

Sulfur

Explanation:

the atomic number is the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table

Sulfur has 16 protons in its nucleus

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 :