The experimental atmosphere consisting 30% oxygen and 70% nitrogen by volume at 14.7 psi absolute pressure and 60°F. Compute for a) the specific weight and partial pressure of the oxygen and (b) the...

The experimental atmosphere consisting 30% oxygen and 70% nitrogen by volume at 14.7 psi absolute pressure and 60°F. Compute for a) the specific weight and partial pressure of the oxygen and (b) the specific weight of the mixture. Assume the gas constant for oxygen and nitrogen are 1554ft2/(sec2. °R) and 1773ft2/(sec2. °R) respectively.