A compound was found to contain 33.8% copper, 14.9% nitrogen and the rest oxygen. What is its empirical formula

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

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.