Chemistry Practice Problems Thermochemical Equation Practice Problems Solution: Given the chemical reaction: C3H8(g) + 5 O2(g) → ...

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Solution: Given the chemical reaction: C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g)                 ΔH = −2044 kJ How much energy would be released if 2.0 moles of O 2 were reacted? A. 8.2 * 10 2 kJ B. 2.1 * 10 3 kJ C. 4.1 * 10 3 kJ D. 2.0 * 10 4 kJ E. 1.3 * 10 5 kJ

Problem

Given the chemical reaction:

C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g)                 ΔH = −2044 kJ

How much energy would be released if 2.0 moles of O 2 were reacted?

A. 8.2 * 10 2 kJ

B. 2.1 * 10 3 kJ

C. 4.1 * 10 3 kJ

D. 2.0 * 10 4 kJ

E. 1.3 * 10 5 kJ