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An isotope of xenon has an atomic number of 54 and contains 77 neutrons. what is the xenon isotope's mass number? 23 54 77 131
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A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?
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Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?
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An isotope of xenon has an atomic number of 54 and contains 77 neutrons. what is the xenon isotope's...
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