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Consider the reaction: C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) ,where ΔH = -531 kcal/mol. How much heat is released when 3.40 × 1020 molecules of C3H8(g) is burned?
Obligation
A duty or commitment to pay money or perform some action in the future, often legally enforceable.
Present Value
Present value is the current worth of a future sum of money or stream of cash flows given a specified rate of return.
Excavation
The process of removing soil, rock, or other materials from a site to form an open hole or cavity.
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