Given than a current of 1 A corresponds to a flow of 1 C s−1, how much charge will a fully charged 9.0 V battery hold?

To answer this question, we need to know the capacity of the battery in ampere-hours (Ah) or milliampere-hours (mAh), which is a measure of the amount of electric charge it can deliver at a specific voltage. Most batteries are rated in Ah or mAh.

However, the question only provides the voltage of the battery (9.0 V) and not its capacity. Therefore, it's impossible to determine the amount of charge the battery can hold with the given information.

If we had the capacity, we could use the formula Q = It (where Q is the charge, I is the current, and t is the time) to calculate the charge. For example, if a battery has a capacity of 1 Ah, it means it can provide a current of 1 A for an hour. So, the charge it can deliver is Q = 1A * 3600s = 3600 C.

But without knowing the capacity of the 9.0 V battery, we can't calculate the charge.