A sample of carbon dioxide gas at a pressure of 891 mm Hg and a temperature of 84 C occupies a volume of 5.61 L. If the gas is cooled at constant pressure to a temperature of 40 C, the volume of the gas will be __ L.

4.92L

Explanation:

Given parameters:

Initial pressure  = 891mmHg

Initial temperature  = 84°C  = 84 + 273  = 357k

Initial volume  = 5.61L

New temperature  = 40°C   = 273 + 40  = 313k

Unknown:

New volume  = ?

Solution:

Since we are dealing with constant pressure condition, we apply charles's law.

It states that the volume of a fixed mass of gas varies directly as its absolute temperature if the pressure is constant.

    Mathematically ;

             =  

V1 is the initial volume                     V2 is the new volume

T1 is the initial temperature             T2 is the new temperature

      =  

           V2  = 4.92L

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

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