What will always be different in the isotopes of atoms? \?

219 grams of iron (iii) oxide reacts with excess carbon according to the reaction equation shown below. fe2o3 + c → fe + co2 after a scientist performs the chemical reaction they find the actual yield of iron to be 57.4 grams. calculate the percent yield of this chemical reaction.

What three things determine the shape and size of a puddle when water is poured out onto a surface

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same