Use the following information to answer the next three questions. Nuclear Reaction Equation (}_{92)^235U+^10narrow ^14456Ba+^2bcdKr+2^1_(0)n+energy 2. The nuclear reaction above represents A. fusion (B.) fission C. beta decay D. alpha decay 3. The value of cd in the reaction above can be identified using the Law of Conservation of A. mass B. energy C. charge D. momentum 4. In the above fission reaction, the mass of the reactants is 236 .05 u, and the mass of the products is 235.86 u. The following statement that best describes the change in mass that occurs is A. Mass and energy are equivalent, and mass has been converted into energy in his reaction. B. Mass and energy are equivalent, and energy has been converted into mass in this reaction. C. Mass and energy are equivalent, and the missing mass is due to inaccurate laboratory measuring equipment. D. Neutrinos that are given off in the fission reaction are undetectable , which accounts for the differences in mass of the detectable components of the reaction.

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Use the following information to answer the next three questions. Nuclear Reaction Equation (}_{92)^235U+^10narrow ^14456Ba+^2bcdKr+2^1_(0)n+energy 2. The nuclear reaction above represents A. fusion (B.) fission C. beta decay D. alpha decay 3. The value of cd in the reaction above can be identified using the Law of Conservation of A. mass B. energy C. charge D. momentum 4. In the above fission reaction, the mass of the reactants is 236 .05 u, and the mass of the products is 235.86 u. The following statement that best describes the change in mass that occurs is A. Mass and energy are equivalent, and mass has been converted into energy in his reaction. B. Mass and energy are equivalent, and energy has been converted into mass in this reaction. C. Mass and energy are equivalent, and the missing mass is due to inaccurate laboratory measuring equipment. D. Neutrinos that are given off in the fission reaction are undetectable , which accounts for the differences in mass of the detectable components of the reaction.

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2. **(B) fission**. The reaction shows a large nucleus (Uranium-235) splitting into smaller nuclei (Barium-144 and Krypton). This is the definition of nuclear fission. Fusion is the combining of smaller nuclei into a larger one. Alpha and beta decay involve the emission of particles from a nucleus, not the splitting of the nucleus itself.3. **(C) charge**. In a nuclear reaction, the total number of protons (and therefore the total charge) must be conserved. The sum of the atomic numbers (number of protons) on the left side of the equation must equal the sum on the right side. This allows us to determine the atomic number (and therefore the identity) of the unknown element Kr. While mass-energy is also conserved, it doesn't directly help identify 'cd'. Momentum is conserved, but not relevant to identifying the element.4. **(A) Mass and energy are equivalent, and mass has been converted into energy in this reaction.** The decrease in mass (236.05 u - 235.86 u = 0.19 u) is converted into energy according to Einstein's famous equation, E=mc². This energy is released in the fission reaction. The missing mass is not due to inaccurate measurement or undetectable neutrinos; it represents the mass converted to energy.

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