1. The problem statement, all variables and given/known data Estimate partial pressure of nitrogen in atm in a room where you are at this moment. Use an ideal gas approximation and assume that air is composed of only nitrogen and oxygen. Show how you arrive the final answer in detail. 2. Relevant equations pv=RT, while p stands for pressure, v stands for specific volume([itex]m^3/kg[/itex]), T stands for temperature(K) and R stands for gas constant(kJ/Kg*K). R for Air is 0.2870, Nitrogen it is 0.2968, and for oxygen it's 0.2598. 3. The attempt at a solution First of all, by volume, air is 80% nitrogen and 20% oxygen. This information is considered essential to find out what is the partial temperature of nitrogen is. My room's temperature is 21 degrees celcius, so Kelvin temperature is about 294.15K. So, in the equation pv=RT, RT = 0.2870*294.15 = 84.42105. I wanted to find out what is specific volume of air as ideal gas so that I can find out what the pressure is, but I wasn't able to. I made several attempts, but I wasn't able to go further.