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( ) → 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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