How much ammonia is needed to interact with sulfuric acid to get 200 grams of ammonium sulfate?

2NH3 + H2SO4 = (NH4) 2SO4.
1) Find the molar mass of ammonium sulfate according to the periodic table: 2 (14 + 4) + 32 + 16 * 4 = 132.
2) Find the amount of ammonium sulfate substance. To do this, divide its mass by the molar mass: 200/132 = 1.5 mol.
3) According to the reaction equation, there are two moles of ammonia per mole of ammonium sulfate. This means that the amount of ammonia substance is: 1.5 / 2 = 0.75 mol.
4) Find the molar mass of ammonia: 12 + 3 = 17.
5) Find the mass of ammonia. To do this, multiply its molar mass by the amount of substance: 0.75 * 17 = 12.75 g – the answer.

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