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Thermochemistry II: enthalpy and Hess's Law — Homework
State whether each reaction or process is exothermic or endothermic, and show any Hess's Law addition clearly.
- 1.Wood burning in a campfire -- exothermic or endothermic?
- 2.Ice melting on a warm day -- exothermic or endothermic?
- 3.Step 1: A -> B, deltaH1 = +25 kJ. Step 2: B -> C, deltaH2 = -60 kJ. Find the overall deltaH for A -> C, and classify it.
- 4.If breaking the bonds in the reactants of a reaction requires 500 kJ, and forming the bonds in the products releases 650 kJ, is the overall reaction exothermic or endothermic? What is the overall deltaH?
🌲 Homeschool of the FutureTenth Grade · Science · week 34 homework