What are the two types of economic activity? Explain

Economic activity: Activities that are related to the production and consumption of goods in return for money. The main motive is to earn money.

The economic activities are:

Primary activity: these are related to the extraction of natural resources.

Secondary activity: these are related to the processing of raw materials.

Tertiary activity: these are related to providing services.

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2