3 An ideal monatomic gas, consisting of 2.8 mol of
volume 8.6x10-2 m² , expands adiabatically. The
initial and final temperatures are 75 °C and -85
°C.
What is the final volume of the gas ?

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?