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grigory [225]
3 years ago
10

An atomic model shows 19 protons, 20 neutrons, and 19 electrons. What is the mass number of the atom?

Chemistry
1 answer:
agasfer [191]3 years ago
7 0
The mass number of the atom is 39
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i’d say the temperature would be -8.98 C simply - I don’t know what formula youd use for this

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