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How Much Heat Is Absorbed/released When 40

Question 14

Multiple Choice

How much heat is absorbed/released when 40.00 g of NH3(g) reacts in the presence of excess O2(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)
How much heat is absorbed/released when 40.00 g of NH<sub>3</sub>(g) reacts in the presence of excess O<sub>2</sub>(g) to produce NO(g) and H<sub>2</sub>O(l) according to the following chemical equation? 4 NH<sub>3</sub>(g) + 5 O<sub>2</sub>(g) → 4 NO(g) + 6 H<sub>2</sub>O(l) H° = 1168 kJ A) 685.8 kJ of heat are absorbed. B) 685.8 kJ of heat are released. C) 2743 kJ of heat are absorbed. D) 2743 kJ of heat are released. H° = 1168 kJ


A) 685.8 kJ of heat are absorbed.
B) 685.8 kJ of heat are released.
C) 2743 kJ of heat are absorbed.
D) 2743 kJ of heat are released.

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