I need help with this assignment pls zoom in if you need to see the questions better!

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

The excretory system, need answers for all: )