a 2 l container will hold about 4 g of which of the following gases at 0°c and 1 atm?

At 0°C and 1 atm, a 2 L container will hold about 4 g of NH₃ (ammonia).

Quick Scoop

To see why, use the molar volume idea at STP (0°C, 1 atm): 1 mol of any ideal gas occupies about 22.4 L.

• Moles of gas in 2 L at STP:

n=\frac{2,\text{L}}{22.4,\text{L·mol}^{-1}}\approx 0.089,\text{mol}

• The gas whose molar mass is close to \frac{4\\text{g}}{0.089\\text{mol}}\approx 45\\text{g·mol}^{-1} will give about 4 g in 2 L.

• Among common options (N₂ ≈ 28, NH₃ ≈ 17, CO₂ ≈ 44, SO₂ ≈ 64 g·mol⁻¹), CO₂ (44 g·mol⁻¹) is closest to 45, so the container will actually hold about 4 g of CO₂.

So, if the multiple‑choice list is the standard one (N₂, NH₃, CO₂, SO₂), the correct answer is CO₂ (carbon dioxide).