A balloon filled with helium occupies 20.0 L at 1.50 atm and 25°C. How many moles of helium will there be in the balloon at STP?
A. 22.4 moles
B. 1.12 moles
C. 0.0446 moles
D. 0.893 moles
E. 1.23 moles
F. 4.55 moles
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