An ideal gas (N2) has a volume of 2.5m^3, at a temperature of 60 degree C, and a pressure of 3.2 atm. Heat flows out of the gas isobarically so that it is compressed to a volume 1.5m^33. The gas then is compressed isochorically to a new pressure 5.3 atm and reaches its original temperature.

a) The are ____ moles of N2.

b) The mass of N2 is _____g.

c) The change in the internal energy of the gas is _____J.

d) The work is done in the process is _____J

e) ________J of heat flow (select one: in, out)

f) The pressure if the gas is heated isothermally to twice its original volume is _______ atm