As a result of the reaction between hydrogen and nitrogen, 18 grams of ammonia

As a result of the reaction between hydrogen and nitrogen, 18 grams of ammonia was formed. find the masses of the gases that have reacted.

To solve the problem, we compose the equation:
X g -? X g -? m = 18 g.
1. 3H2 + N2 = 2NH3 – compounds, obtained ammonia;
2. Calculations by formulas:
M (H2) = 2 g / mol;
M (N2) = 28 g / mol;
M (NH3) = 17 g / mol;
Y (NH3) = m / M = 18/17 = 1.06 mol.
3. Proportions:
X mol (H2) – 1.06 mol (NH3);
-3 mol -2 mol hence, X mol (H2) = 3 * 1.06 / 2 = 1.59 mol;
X mol (N2) – 1.06 mol (NH3);
-1 mol – 2 mol hence, X mol (N2) = 1 * 1.06 / 2 = 0.53 mol.
4. Find the masses of the starting materials:
m (H2) = Y * M = 2 * 1.59 = 3.18 g;
m (N2) = Y * M = 0.53 * 28 = 14.84 g.
Answer: the mass of hydrogen is 3.18 g, nitrogen – 14.84 g. One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.