Under certain conditions, the substances zinc oxide and water combine to form zinc hydroxide. If 29.4 grams of zinc oxide and 6.5 grams of water combine to form zinc hydroxide, how many grams of zinc hydroxide must form? grams zinc hydroxide Under certain conditions, the substance ammonium nitrate can be broken down to form dinitrogen monoxide and water. If 21.6 grams of ammonium nitrate react to form 11.9 grams of dinitrogen monoxide, how many grams of water must simultaneously be formed? grams water Under certain conditions, the substance hydrogen peroxide (H2O2) can be broken down to form water and oxygen. If 29.8 grams of hydrogen peroxide (H202) react to form 15.8 grams of water, how many grams of oxygen must simultaneously be formed? grams oxygen