Can someone help me to answer this correctly, please, and explain it. Please answer these 3 short questions, I don't have more money to buy more questions. These 3 questions are different.

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Under certain conditions, the substances diphosphorus pentoxide and water combine to form phosphoric acid. If 26.7 grams of diphosphorus pentoxide and 10.2 grams of water combine to form phosphoric acid, how many grams of phosphoric acid must form? Mass = g Under certain conditions, the substance ammonium nitrite can be broken down to form nitrogen and water. If 30.4 grams of ammonium nitrite react to form 13.3 grams of nitrogen, how many grams of water must simultaneously be formed? grams water The illustration on the left represents a mixture of N2 (blue) molecules and H2 (light blue) molecules. If these were to react to form NH3 molecules, what is the maximum number of NH3 molecules that could form? Hint: Atoms must be conserved in an ordinary chemical reaction. NH3 molecules