Solve what is asked in the given problem. John Q 1.3moles of Helium to a balloon that already contained 4.5moles of Helium creating a balloon with a volume of 10L. What was the volume of the balloon before the addition of the extra gas? Solve with the following sequence: 1. Problem 2. Given 3. Unknown 4. Formula and Derived formula 5. Solution = n1 n2 V1 = V2n1 n2 Solve What is asked in the given problem. A gas system has an initial volume of 3.00L with the number of moles unknown. When the volume changes to 0.50L, under conditions of constant pressure and temperature, the number of moles is found to be 0.05mol. What was the initial number of moles? Solve with the following sequence: 1. Problem 2. Given 3. Unknown 4. Formula and Derived formula 5. Soiution = 2 n1 n2 n1 = V1112 V2