The assertion that 1g of uranium can produce energy equivalent to 10kg of coal implies that
Uranium can produce more excessive energy
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the energy production capability of uranium is much higher than that of coal. This assertion is based on the concept of energy density, which describes the amount of energy released per unit mass of a fuel.
To understand how to calculate energy density, we need to determine the energy content of both uranium and coal.
1. Uranium: The energy released from uranium is primarily obtained through nuclear fission, where the atomic nucleus of uranium atoms splits into two smaller nuclei, releasing a significant amount of energy. The energy content of uranium can be measured in terms of its specific energy, which is the energy released per unit mass of uranium fuel. For simplicity, let's consider a commonly used isotope of uranium, Uranium-235 (U-235). The specific energy of U-235 is estimated to be approximately 24 million kilojoules per gram (24 MJ/g).
2. Coal: The energy in coal comes from the combustion of its carbon content, which reacts with oxygen to release energy in the form of heat. The specific energy of coal can vary depending on its type and quality but is generally around 30-35 megajoules per kilogram (30-35 MJ/kg).
Now, let's compare the energy density between uranium and coal:
1g of uranium (U-235): 24 MJ/g × 1g = 24 MJ
10kg of coal: 30 MJ/kg × 10kg = 300 MJ
Based on these calculations, we see that 1g of uranium (U-235) has an energy content of 24 MJ, which is significantly higher than the energy content of 10kg of coal, which is 300 MJ. Therefore, the assertion that 1g of uranium can produce energy equivalent to 10kg of coal implies that uranium has a much higher energy production capability than coal.