Final answer:
The question on the number of moles added to a balloon cannot be answered as given; the final volume or conditions after adding the gas are required to apply the ideal gas law and calculate the exact amount of moles added.
Step-by-step explanation:
The question asks us to calculate the number of moles of gas that were added to a balloon if its original volume was 1.4 L containing 2.3 moles of gas. To solve this, we use the ideal gas law, which states that at a constant temperature and pressure, the volume of a gas is directly proportional to the number of moles. In the examples provided, additional gas was added to a balloon, resulting in a change in the number of moles while keeping the temperature and pressure constant, which implies that the volume would also change in direct proportion to the moles.
However, without information about the final volume, temperature, or pressure, we cannot apply the ideal gas law directly to find the new number of moles. The question appears to be incomplete or missing some details that would allow us to guide you to the correct answer. If more information can be provided, such as the final volume or the conditions of the gas after more moles have been added, we could then apply the ideal gas law or other gas-related equations to calculate the number of moles added to the balloon.
As given, the question doesn't provide enough information to choose any of the answers listed (a) 9.5 mol, (b) 4.4 mol, (c) 12 mol, or (d) 0.085 mol