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)
Definitions:
Tension-Cohesion Model
A theory explaining the movement of water through the xylem of plants, based on water molecule cohesion and tension created by evaporation.
Water Potential
A measure of the potential energy in water as well as the difference in potential energy between a given water sample and pure water, determining the direction water will flow.
Root Pressure
A pressure within the vascular system of the roots of plants that helps drive fluids upwards into the stem and leaves.
Water Potential
A measure of the potential energy in water, influencing its movement from areas of higher water potential to areas of lower water potential.
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