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Lerok [7]
3 years ago
6

**CHEMISTRY!! PLEASE HELP ASAP!!**

Chemistry
1 answer:
Minchanka [31]3 years ago
6 0
Calcium = 1
Sulfur = 1
Oxygen = 4
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A certain isotope has 53 protons 78 neutrons and 53 electrons. What is its atomic number? What is the mass number of this atom?
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