1. carbon dioxide is in a steel tank at 20°c, 10 liters and 1 atm. what is the pressure on the gas when the tank is heated to 100°c?
2. what temperature will 215 ml of a gas at 20°c and 1 atm pressure attain when it is subject to 1.5 atm of pressure?
3. when the volume changes from 63.5 ml to 69.2 ml, what is the final pressure if the initial pressure was 735 mm hg pressure?
what laws were used on these?

  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-