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dsp73
3 years ago
9

What can be concluded about the atom from knowing that oxygen-18 has an atomic number of 8? A) An oxygen atom that includes 8 ba

ryons, 9 prions, and 10 neutrons. B) This oxygen isotope contains 8 electrons, 8 protons, and 10 neutrons. C) It's an oxygen allotrope incorporates 7 electrons, 7 protons, and 7 quarks. D) The oxygen configuration consists of 6 electrons, 8 photons, and 10 neutrons.
Physics
2 answers:
anyanavicka [17]3 years ago
4 0
B)

If it is known that the atomic number is 8, we know that the electrons are also 8. Since the atomic mass (O18) is 18, the neutrons are 18-8=10. Option B is the correct answer. 

Hope I helped :) 
Xelga [282]3 years ago
4 0

Answer:

B

Explanation:

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Explanation:

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From the previous equation we solve for heat, because it is the unknown variable in this problem

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And replacing the known values:

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\Delta Q=250kJ -480kJ

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