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maxonik [38]
3 years ago
5

The mass number of an atom is equal to which of the following?

Chemistry
1 answer:
Phantasy [73]3 years ago
4 0
Mass number is equal to the number of protons plus the number of neutrons in a nucleus of an atom
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Use bond energies to determine δhrxn for the reaction between ethane and chlorine. ch3ch3(g)+cl2(g)→ch3ch2cl(g)+hcl(g)
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