Plutonium-239 Decays into Uranium-235 Plus an Alpha Particle

question 51

Multiple Choice

Plutonium-239 decays into uranium-235 plus an alpha particle.The energy released in the process is 5.24 MeV.Given the following mass values He: 4.002603 u U: 235.043924 u what is the mass of Pu in atomic mass units? (1 u = 931.494 MeV/c²)

• A)239.05215 u
• B)239.02775 u
• C)239.00189 u
• D)238.99919 u
• E)238.98884 u

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Definitions:

Umbilical Cord

A tube between the mother and her developing child through which nutrients and waste products are conducted.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to and removing waste from the developing fetus.

Uterine Tube

Also known as the fallopian tube, it's part of the female reproductive system that carries eggs from the ovaries to the uterus.

Fallopian Tube

A pair of tubes along which eggs travel from the ovaries to the uterus.