6 points
6. According to this equation, how many moles of Ag, S will be produced
from 20 moles of Ag? (Assume H S and O, are in excess). *
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4Ag + 2H2S + O2 → 2A82S + 2H20
O A. 20 moles
O B. 10 moles
O C. 5 moles
O D. O moles