Answer :
To fill 2.00 L balloons with 2.00 moles of hydrogen gas, you can fill approximately 22,745.89 balloons.
The first step to answer the question is to convert the given volume of hydrogen gas to the mass of hydrogen gas. To do this, we need to use the molar mass of hydrogen (2.016 g/mol) and the ideal gas law equation. 2.00 L of hydrogen gas at STP contains 2.00 moles. Next, we can use the density of hydrogen gas to determine the mass of the given volume. 0.00523 lb/ft is equivalent to 0.0091998 g/cm³. Once we have the mass and molar mass, we can calculate the number of moles in the given mass. Using the given number of moles of hydrogen gas, we can then calculate the number of moles in 2.00L balloons. Finally, we can convert the moles to the number of balloons.
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