Calculate the Energy Released in Joules When One Mole of Polonium-214

question 59

Multiple Choice

Calculate the energy released in joules when one mole of polonium-214 decays according to the equation Po Pb + He. [Atomic masses: Pb-210 = 209.98284 amu, Po-214 = 213.99519 amu, He-4 = 4.00260 amu.]

• A)8.78 × 10¹⁴ J/mol
• B)7.2 × 10¹⁴ J/mol
• C)8.78 × 10¹¹ J/mol
• D)-9.75 × 10^-3 J/mol
• E)1.46 × 10^-9 J/mol

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Definitions:

Spectral Data

Refers to information obtained from the analysis of the spectrum of light that a substance emits or absorbs, which can reveal properties about the substance's composition and structure.

IR

Infrared spectroscopy, a technique used to identify and study chemicals through the absorption of light in the infrared spectrum.

NMR

Nuclear Magnetic Resonance, a spectroscopic technique that exploits the magnetic properties of certain nuclei to determine the structure of compounds.

Molecular Formula

A notation representing the number and type of atoms in a molecule without depicting the bonds (e.g., H2O for water).