If 10g each of uranium and hydrogen are converted into energy according toequation E = mc2
Correct answer: A. energy obtained from uranium will be too much greater than that of hydrogen
- A. energy obtained from uranium will be too much greater than that of hydrogen
- B. energy obtained from hydrogen will be a little bit less than that of uranium
- C. energy obtained from hydrogen and uranium will always be exactly equal
- D. diamond
Explanation
The equation E=m c2 represents Einstein's mass-energy equivalence formula, where E is the energy, m is the mass, and c is the speed of light.Given that 10g each of uranium and hydrogen are converted into energy, the amount of energy obtained depends on the mass of the substances. Uranium has a much greater atomic mass than hydrogen. Specifically, uranium has a much larger molar mass.Calculate the energy obtained from uranium: Euranium =muranium × c2Calculate the energy obtained from hydrogen: Ehydrogen =mhydrogen × c2Since c2 is a constant, the energy obtained is directly proportional to the mass.Now, considering that the mass of uranium is much greater than that of hydrogen, the energy obtained from uranium will be much greater than that obtained from hydrogen.
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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