Find the partial pressure of the octane and specific volume

Question

Problem

1. In a car engine, gasoline (assume octane, C₈H₁₈) is evaporated and then mixed with air in a ratio of 1:15 by mass. In the cylinder the mixture is at 750 kPa, 650 K when the spark fires. For that time, find the partial pressure of the octane and the specific volume of the mixture.

2. A 100-m³ storage tank with fuel gases is at 20?C, 100 kPa containing a mixture of acetylene (C₂H₂), propane (C₃H₈), and butane (C₄H₁₀). A test shows that the partial pressure of the C₂H₂ is 15 kPa and that of the C₃H₈ is 65 kPa. How much mass is there of each component?

The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.