Answer:

Explanation:
1 mol of helium contains 6.022 × 10²³ atoms

The balloon contains
.
I believe it becomes gasses the hotter it gets
<u>Given:</u>
Fe2O3 + 3CO → Fe + 3CO2
<u>To determine:</u>
The elements that are not balanced in the above equation
<u>Explanation:</u>
A chemical equation is said to be balanced if the number of atoms on the reactants is equal to that of the product side.
Reactant Product
Fe = 2 atoms Fe = 1 atom
O = 6 atoms O = 6 atoms
C = 3 atoms C = 3 atoms
<u>Ans:</u> Therefore, Fe is not balanced as there is 1 atom less on the product side
Balanced equation: Fe2O3 + 3CO → 2Fe + 3CO2