How many moles of gas are contained in a 5.6 L sample at STP?

0.25 mol
0.50 mol
1.00 mol
2.24 mol

📝 Detailed explanation

At STP, 1 mole of an ideal gas occupies 22.4 L.
Moles = Volume / 22.4 = 5.6 / 22.4 = 0.25 mol.

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