Acompound is found to be 3 percent hydrogen, 32 percent phosphorus, and 65 percent oxygen. what is the empirical formula of this compound?

hpo

hpo4

h(po4)3

h3po4

Empirical formula is H₃PO₄

Explanation:

Given data:

Percentage of hydrogen = 3%

Percentage of P = 32%

Percentage of oxygen = 65%

Empirical formula = ?

Solution:

Number of gram atoms of H = 3 / 1= 3

Number of gram atoms of O = 65 / 16 = 4.06

Number of gram atoms of P = 32 / 31 = 1.03

Atomic ratio:

            H                      :      P                 :            O

           3/1.03               :     1.03/1.03      :         4.06/1.03

            3                      :        1               :              4

H : P : O = 3 : 1 : 4

Empirical formula is H₃PO₄.

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

  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-