Question

How many moles are contained in 2.0 L of N₂ at standard temperature and pressure.

Answer 1

To determine the moles in 2.0 L of N2 gas at STP, simply divide the volume by 22.4 L/mol, giving approximately 0.089 moles of N2.

Step-by-step explanation:

The student asked how many moles are contained in 2.0 L of N₂ at standard temperature and pressure (STP). To answer this, we can use the known volume-to-moles relationship for gases at STP, which states that one mole of a gas occupies 22.4 L at STP.

Using this information:

1. Divide the given volume by the volume that one mole of gas occupies at STP: 2.0 L / 22.4 L/mol.
2. Calculate the number of moles: This equals to approximately 0.089 moles of N₂.

Therefore, 2.0 L of N₂ at STP contains about 0.089 moles of N₂.