A customer upset by the latest trend of postal rate increases has decided to try to send letters by balloon even though they might not reach their intended destination. A 66400 cm3 gas-filled balloon will provide enough lift for a 45.1 g package to be accelerated upward at a rate of 3.25 m/s2. For these circumstances, compute the density of the gas the customer fills the balloon with. The acceleration due to gravity is g = 9.81 m/s2 and the density of air is air = 1.16 kg/m3. Neglect the mass of the balloon material and the volume of the package.