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Arisa [49]
3 years ago
7

The sodium atom contains 11 electrons, 11 protons, and 12 neutrons. what is the atomic mass of sodium?

Chemistry
1 answer:
Gnoma [55]3 years ago
7 0
Atomic mass is the number of protons + number of neutrons. 11 protons + 12 neturons = 23
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Answer:

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Explanation:

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In this case, since these calorimetry problems are characterized by the fact that the calorimeter absorbs the heat released by the combustion of the substance, we can write:

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Now, by dividing by the moles in 1.04 g of cyclopropane (42.09 g/mol) we obtain the enthalpy of combustion of this fuel:

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