How Much Heat Is Absorbed/released When 20

question 35

Multiple Choice

How much heat is absorbed/released when 20.00 g of NH₃(g) reacts in the presence of excess (g) to produce NO(g) and H₂O(l) according to the following chemical equation? 4 NH₃(g) + 5 O₂(g) → 4 NO(g) + 6 H₂O(l) ΔH° = 1168 kJ

• A)342.9 kJ of heat are absorbed.
• B)342.9 kJ of heat are released.
• C)1372 kJ of heat are absorbed.
• D)1372 kJ of heat are released.

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