What is the percent composition of hydrogen (h) in benzene (c6h6)?

Answer : The percent composition of hydrogen in benzene is, 7.69 %

Explanation: Given,

Molar mass of C = 12 g/mole

Molar mass of H = 1 g/mole

First we have to calculate the molar mass of benzene.

Molar mass of benzene =

Now we have to calculate the percent composition of hydrogen in benzene.

As we now that there are 6 number of carbon atoms and 6 number of hydrogen atoms.

The mass of hydrogen =

Formula used :

Now put all the given values in this formula, we get the percent composition of hydrogen in benzene.

Therefore, the percent composition of hydrogen in benzene is, 7.69 %

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  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-