Given Reaction: 2A + B → C ΔHrxn = 128 J
2C → 4A + 2B ΔHrxn = ?
Step 1: Reverse reaction, reverse the sign of ΔHrxn
Consider the following chemical equation:
2A + B → C ΔHrxn = 128 J
What is ΔHrxn for the reaction:
2C → 4A + 2B
Express your answer in joules to three significant figures.
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