# Problem: Given the following data2 O3 (g) → 3 O2 (g)            ΔH = -427 kJO2 (g) → 2O (g)                  ΔH = 495 kJNO (g) + O3 (g) → NO2 (g) + O2 (g)   ΔH = -199 kJcalculate ΔH for the reactionNO (g) + O (g) → NO2 (g)

🤓 Based on our data, we think this question is relevant for Professor Weiss' class at UCSC.

###### Problem Details

Given the following data

2 O3 (g) → 3 O(g)            ΔH = -427 kJ

O2 (g) → 2O (g)                  ΔH = 495 kJ

NO (g) + O3 (g) → NO2 (g) + O2 (g)   ΔH = -199 kJ

calculate ΔH for the reaction

NO (g) + O (g) → NO2 (g)

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Hess's Law concept. You can view video lessons to learn Hess's Law. Or if you need more Hess's Law practice, you can also practice Hess's Law practice problems.

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Our tutors rated the difficulty ofGiven the following data2 O3 (g) → 3 O2 (g)            ΔH = ...as medium difficulty.

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Weiss' class at UCSC.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl 2nd Edition practice problems.