The maximum amount of ammonia that can be obtained from 30 liters of nitrogen and 40 liters of hydrogen will be …

Given:
V (N2) = 30 l
V (H2) = 40 l

To find:
V (NH3) -?

1) Write the equation of a chemical reaction:
N2 + 3H2 => 2NH3;
2) Compare the volumes of N2 and H2:
The volume of H2 is in short supply, therefore, the calculations will be carried out for it;
3) Calculate the volume of NH3 (under normal conditions), guided by the Gay-Lussac law (the law of volumetric ratios, taking into account the coefficients in the reaction equation):
V (NH3) = V (H2) * 2/3 = 40 * 2/3 = 27 liters.

Answer: The volume of NH3 under normal conditions is 27 liters.