They are both ionic compounds
CO2 is a compound, hope this is okay
Answer:
_2Mg + _O2 --≥2MgO this is balanced
Answer:- Fe changes from 0 to +3 and O changes from 0 to -2.
Explanations:- As per the rules for oxidation numbers:-
(1) Oxidation number of an atom in its elemental form is zero. Both the reactants Fe and are in their elemental forms and so the oxidation numbers are zero.
(2) Oxidation umber of oxygen in it's compounds is -2. Let's say the oxidation number of Fe in the product is .
Also, the sum of oxidation numbers of all the atoms in a compounds is zero. So:
So, the oxidation number of Fe in is +3 and the oxidation number of O is -2.
Hence, the oxidation number of Fe changing from 0 to +3 and O is changing from 0 to -2.
In terms of oxidation and reduction, Iron is oxidized and oxygen is reduced.
Answer:
Some substances can change from the solid state to the gas state without ever becoming a liquid. During this process, known as sublimation, the sur- face particles of the solid gain enough energy to become a gas.When dry ice becomes a gas, it absorbs thermal energy from water vapor in the air.
Explanation: