Which of the following must gain 2 electrons to achieve a noble gas configuration? Group of answer choices

Phospors

Nitrogen

Sulfur

Chlorine

sulfur

Explanation:

since sulfur is in group six meaning it has six election in the outer most shell hence it gains two elections for it to be stable

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 :