Answer:
2 moles NaClO3
Explanation:
2NaClO3 --> 2NaCl + 3O2
moles NaClO3 = 3 moles O2 x (2 moles NaClO3/3 moles O2) = 2 moles
conversion factor: 2 moles NaClO3 = 3 moles O2
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Answer D, aluminum, because the other choices are elements.
Mass number is sum of protons and neutrons so 22+26
The sum would be 48
Mass number is 48