13.4 billion years is 3 times of the half-life, 4.47 billion years. So the Uranium-238 will go through three times of half decay. So the remain percentage will be 50%*50%*50%=12.5%.
Answer:
1s2 2s2 2p6 3s2 3p6 3d6 4s2
Explanation:
The half-life of carbon-14 is about 5730 years
Heat water; mechanical (the movement of a turbine is based off of mechanical energy, not chemical or potential).
If it is shown as ∆H , then it means that a specific chemical reaction is undergoing heat in Kelvin(K). If it is shown as ∆H° , then it means that a specific chemical reaction is undergoing heat in Celsius(C⁰).
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