Please help and show work NO LINKS YOU WILL BE REPORTED 1. Calculate the number of moles of oxygen in a 12.5 L tank if the pressure is 2530 kPa and the temperature is 22 degrees C.
2. Calculate the pressure of 0.30 moles of nitrogen dioxide in a 2.7 L container if the temperature is 27 degrees C.
3. A 35 L tank contains 7.0 mol of compressed air at 500 KPa pressure, what is the temperature in Kelvin and Celsius?
4. Calculate the volume that 2.25 mol of air occupies at STP