When A tube with a volume of 3.68L contains how many moles of neon gas?

To determine the number of moles of neon gas in a 3.68 L tube at standard temperature and pressure (STP), you can use the ideal gas law, which states that 1 mole of gas occupies 22.4 L at STP. Therefore, the number of moles of neon gas can be calculated as:

[ \text{Moles of Neon} = \frac{\text{Volume}}{\text{Molar Volume at STP}} = \frac{3.68 , \text{L}}{22.4 , \text{L/mol}} \approx 0.164 , \text{moles}. ]

So, the tube contains approximately 0.164 moles of neon gas.