Calculate the specific volume of helium using the compressibility factor. 500 kpa, 60 degrees celsius

Explanation:

Formula for compressibility factor is as follows.

                     z =

where,     z = compressibility factor for helium = 1.0005

               P = pressure

          = molar volume

                R = gas constant = 8.31 J/mol.K

                T = temperature

So, calculate the molar volume as follows.

                             =

                             = 0.0056

As molar mass of helium is 4 g/mol. Hence, calculate specific volume of helium as follows.

                           =

                           = 0.00139

                           = 0.00139

                                 = 1.39

Thus, we can conclude that the specific volume of Helium in given conditions is 1.39 .

  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-