Given: The equation for the synthesis of ammonia is H2(g) + N2(g) → NH3(g). If 12.0 grams of hydrogen are used up by the reaction, how many grams of ammonia will be produced?

The answer to your question is 68 g

Explanation:

Data

mass of H₂ = 12 g

mass of NH₃ = ?

Balanced chemical reaction

               3H₂  +  N₂   ⇒   2NH₃

Process

1.- Calculate the molar mass of H₂

H₂ = 1 x 6 = 6

NH₃ = 2[(14 x 1) + (3 x 1)]

       = 2[14 + 3]

       = 2[17]

       = 34 g

2.- Use proportions to find the mass of NH₃

                 6 g of H₂ 34 g of NH₃

                12g of H₂  x

                        x = (12 x 34) / 6

                        x = 408/6

                        x = 68 g of NH₃

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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answer; i believe the correct answer is (solid gold);