Question

Helllp!!

Answer 1

4Fe + 3O2 ----> 2Fe2O3

Answer 2

Fe + O2 will give a product called iron (III) oxide or Fe2O3

Fe + O2 ---> Fe2O3

The law of conservation of mass states that mass is neither created or destroyed in a reaction. Therefore the number of atoms needs to be the same for both sides of the equation.

Let's look at the reactants side first and compare it with the product side.

There is 1 Fe on the left side; however, there is 2 Fe's on the right side (not balanced)

There is 2 O's on the left side; however, there is 3 O's on the right side (again, not balanced)

To balance it, add a coefficent of 2 to the product side.

Fe + O2 ---> 2Fe2O3

On the right side, there are now 2 x 2 = 4 Fe's and 2 X 3 = 6 O's.

So add a coefficient of 4 to Fe on the left side and 3 to O to get the equation to balance.

4Fe + 3O2 ---> 2Fe2O3

Answer 3

When it tells you to complete the reaction, you have to write out the full balanced equation with the reactants on the left and products on the right side.

Answer 4

the latter.

4Fe + 3O2 ---> 2Fe2O3

Answer 5

Unless it tells you to show your work. Show your work.

Answer 6

you don't need to do that. Just fill in the blanks

Answer 7

4Fe + 3O2 ---> 2Fe2O3 will work