Final answer:
The question about the minimum diameter of a spherical helium balloon relates to Physics, but the provided information does not include the necessary context or data to determine the diameter. Additional information would be needed for such a calculation.
Step-by-step explanation:
The subject of this question involves calculations related to the helium balloon and its volume, which falls under the field of Physics. The minimum diameter of the spherical helium balloon is not provided directly in the information given. However, the details mentioned in the supporting information relate to the volume of gas that can be delivered at a certain pressure, the number of balloons that can be inflated given a certain amount of helium, the calculation of the molar mass, and the behavior of helium within the balloons under various conditions. The specifics in the question, such as a mentioned diameter, are not addressed in the information provided. Therefore, a calculation or context for determining the minimum diameter is not immediately apparent without additional pertinent information.