Which quantity can vary among atoms of the same element?

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

Predict the products butane (c4h10) + oxygen —>