On the periodic table there are how many elements that occur naturally

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

Ineed to find the answer of this question because i dont understand it

If i add water to oil what will happen