Calculate the ∆H°_rxn for the Combustion of Methane Using the Given

question 14

Multiple Choice

Calculate the ∆H°_rxn for the combustion of methane using the given ∆H°_f. ∆H°_f, methaneg) = -74.60 kJ/mol
∆H°_f, waterl) = -285.8 kJ/mol
∆H°_f, carbon dioxideg) = -393.5 kJ/mol

• A) -1.04 x 10⁺³ kJ/mol
• B) -890.5 kJ/mol
• C) 890.5 kJ/mol

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Definitions:

Alpha Decay

A type of radioactive decay in which an atomic nucleus emits an alpha particle (two protons and two neutrons bound together) and transforms into a different element.

Atomic Nucleus

The atomic nucleus is the small, dense region at the center of an atom, composed of protons and neutrons, and is the core where most of an atom's mass is concentrated.

Ionizing Power

The ability of a chemical element or electromagnetic radiation to ionize atoms or molecules by altering their charge through the removal or addition of electrons.

Beta Particles

High-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei during radioactive decay.