Convert 350.0 mL at 0.97 atm to its new volume at standard pressure (1 atm).

339.5 mL

Explanation:

Assuming the temperature of the gas remains constant, we can solve this problem by using Boyle's Law, which states that:

"When a constant mass of an ideal gas is kept at constant temperature, the pressure of the gas is inversely proportional to its volume"

Mathematically:

where

p is the pressure of the gas

V is its volume

This equation can be rewritten as

where in this problem:

is the initial pressure of the gas

is the initial volume of the gas

is the final pressure

Solving for V2, we find the final volume:

  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-