How many moles are in 0.125 L Ne at STP?

At standard temperature and pressure (STP), one mole of an ideal gas occupies 22.4 liters. To find the number of moles in 0.125 L of neon (Ne), you can use the formula: moles = volume (L) / molar volume (L/mol). Therefore, moles = 0.125 L / 22.4 L/mol, which equals approximately 0.00558 moles of Ne.