Ammonia contains 82.65 % Nhttp://cdn1.askiitians.com/cms-content/common/cdn.askiitians.comImagessubjectchemistry-82820132870.png.jpg and 17.65% H2. If the law of constant proportions is true, then the mass of zinc required to give 10 g Ammonia will be:

Um... I don't understand. How is the zinc and ammonia related?