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?

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.