Is this an acceptable word equation?

If we have the following reaction:



Would this be an acceptable word equation?



Or, we have to determine the number of moles of each? Or, this is not necessary since it is just an indication of the stoichiometry?

Thanks.

If we have the following reaction:



Would this be an acceptable word equation?



Or, we have to determine the number of moles of each? Or, this is not necessary since it is just an indication of the stoichiometry?

Thanks.

Word equation doesn't have to show the stoichiometry of the elements/compounds.
It'd have been better to write it like
magnesium (s) + oxygen (g) ---> magnesium oxide (s)

That is correct (you've forgotten the (g) for O₂ but it doesn't matter) and it is not necessary. You could calculate the number of moles if you knew the volume of O₂ or the mass of either solid Mg or MgO, but you don't include the number of moles of each compound in the word equation.

If we have the following reaction:



Would this be an acceptable word equation?



Or, we have to determine the number of moles of each? Or, this is not necessary since it is just an indication of the stoichiometry?

Thanks.

Just write: Magnesium + Oxygen --> Magnesium oxide

You don't need to write the number of moles reacting / produced for the chemicals or the state symbols in word equations - word equations only contain the names of the chemicals.

But, I think putting the states is acceptable. Don't you think so?