Fe + O2 —> Fe2O3

can someone pls help me balance this??

If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)

Carbon-14 undergoes radioactive decay in the reaction above. determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.

I’m an electrically neutral atomic any element, there are equal numbers of