The barrel is 1 6 m long and has an internal diameter of 1 3 0 mm . One challenge is to identify how many runs of the facility can be completed using a single G - size gas cylinder. G - size gas cylinders from BOC are sold as: • 7 . 1 m 3 ( 1 5 0 0 0 kPa ) for air cylinders 1 . ; and • 3 1 kg for CO 2 ( carbon dioxide ) cylinders 2 . Note that the given volume for the air cylinder indicates how much ‘ standard air ’ has been stored in the cylinder at 1 5 0 0 0 kPa. The actual volume of the G - size cylinder is significantly less than 7 . 1 m 3 . Using only the specifications listed above, calculate: ( a ) the actual volume of a G - size cylinder ( b ) the mass of air contained in a full G - size air cylinder ( c ) the pressure of a filled G - size CO 2 cylinder ( d ) the number of runs that can be completed using CO 2 as the test gas if the barrel is filled to 9 4 kPa and 2 0 ◦ C ( e ) the number of runs that can be completed using a single G - sized air cylinder if the barrel is filled to 9 4 kPa and 2 0 ◦ C