2Cl2(g) 7O2(g) 130kcal > 2Cl2O7(g)

Take 7 divided by 2 to get the correct mole ratio then multiply that by 130kcals to get the amount of energy required, 455 kcal.

the correct answer is 455 kcal

This post is last updated on hrtanswers.com at Date : 1st of September – 2022