Given the following reaction:
CH4 +202
CO2 + 2H2O
How many moles of CO2, will be produced from 20.0 g of CH4, assuming O2 is available in excess?

1.25 moles of CO₂ is formed from 20.0 g of CH4,.

Explanation:

The balanced equation for the combustion of methane produces carbon-di- oxide and water.

CH₄ +20₂  → CO₂ + 2 H₂O

First we need to find the number of moles of methane reacted using the given mass and its molar mass as,

Thus it is calculated that 1.25 moles of CO₂ is formed from 20.0 g of CH4,.

  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-