Would someone check my answers? . 1. which of these pairs of elements is most likely to be part of a polyatomic ion? . rb and cl. ba and o < . c and n. 2. which of the following element combinations will likely form polyatomic ions? . oxygen and carbon < . sodium and bromine. xenon and neon. cesium and chlorine. k and br. 4. which of the following ions is not an oxyanion? . co^3^2-. cn-. so^4^2-. no-

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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 :