9. Your spaceship has docked at a space station above Mars. The temperature inside the space station is a carefully controlled 24oC at a pressure of 745 mmHg. A balloon with a volume of 425 mL drifts into the airlock where the temperature is -95oC and the pressure is 0.115 atm. What is the final volume, in milliliters, of the balloon if n (moles) does not change and the balloon is very elastic?

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-