Suppose 1.9 mol of an ideal gas is taken from a volume of 2.8 m3 to a volume of 1.3 m3 via an isothermal compression at 27°c. (a) how much energy is transferred as heat during the compression, and (b) is the transfer to or from the gas?

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?