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ΔH = +572 KJ for the Decomposition of Water by the Reaction

Question 42

Multiple Choice

ΔH = +572 kJ for the decomposition of water by the reaction 2 H2O( ΔH = +572 kJ for the decomposition of water by the reaction 2 H<sub>2</sub>O( ) → 2 H<sub>2</sub>(g) + O<sub>2</sub>(g) .How many grams of water can be decomposed by 5.00 × 10<sup>3</sup> kJ of energy? A) 157 g B) 315 g C) 0.0629 g D) 2.57 × 10<sup>7</sup> g E) 5.15 × 10<sup>7</sup> g ) → 2 H2(g) + O2(g) .How many grams of water can be decomposed by 5.00 × 103 kJ of energy?


A) 157 g
B) 315 g
C) 0.0629 g
D) 2.57 × 107 g
E) 5.15 × 107 g

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