One mole of compound A, with vapor pressure 420mmHg at 50°C, mixed with 5 moles of compound B, with vapor pressure 480mmHg at 50°C to form a homogeneous solution. What is the vapor pressure of mixture at 50°C?

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.