1,According to this equation, what volume of F_{2(g)} at 40°C and 2.00 atm is required to react completely with 1.16 L of NH_{3(g)} at 15°C and 1.25 atm?

2,What is the molarity of a 81.8-mL KCl solution which contains 7.66 g of KCl?

3,Calculate the molarity of the following aqueous K_{2}SO_{4} solution: 4.31 moles of K_{2}SO_{4} in 1.07 L of solution.

4,Calculate the molarity of the following aqueous HBr solution: 7.47 moles of HBr in 1.02×10^{3} mL of solution.