How many moles of fecr2o7 are required to produce 20 moles of co2

This is a stoichiometry question

The stoichiometry between FeCr2O7:CO2

=4:8

=1:2

therefore moles of FeCr2O7 needed=2 *20moles

=40 moles

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.