Using moles to balance chemical equations

https://www.youtube.com/watch?v=4wTSLBBBMo0&list=PL9IouNCPbCxUhxxFUbR4SNfwmaRB8mYX3&index=10&ab_channel=Freesciencelessons

Whats first step

Calculate number of moles for each atom in the equation.

Number of moles = mass (g) / relative formula mass Mr

Whats next step

Making sure its lowest possible ratio, so dividing everything by the smallest mole thats there, then placing the divided number infront of the element to balance it

54g of aluminium reacts with 216g of iron (II) oxide, forming 102g of aluminium oxide and 168g of iron. Balance the equation.

First calculate number of moles for each molecule.

Aluminium 2 moles, Iron II oxide 3 moles, Aluminium oxide 1 mole, iron 3 moles.

To find simplest ratio, divide everything by smallest number, which is 1 in this case.

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