1 Cover the onion with the solution prepared in step 1. 2  Put the beaker in a 65 C hot water bath for 15 minutes, pressing the chopped onion mixture against the side of the beaker with the back of a fork. 3  Filter the mixture through cheese cloth directly into a beaker containing 250 mL of ice cold 95% ethanol. When dissolved, add 75 mL of distilled water to make the extraction solution. 2  Avoid frothing. 3  Cut a medium sized onion into small (~5 mm) segments. 4  Weigh out 100 grams of the onion and place into a 600 mL beaker.
These 10 animal facts will amaze you. Rural sociology is a scientific discipline focused on all aspects of a rural way of life, including its customs, demographics, and interactions with urban groups.This specific area of sociology explores rural society's role in the rest of the world, particularly in terms of economics and social theory.hese 10 animal facts will amaze you. Rural sociology is a scientific discipline focused on all aspects of a rural way of life, including its customs, demographics, and interactions with urban groups.
Rural community is a society that is in a rural area (country side). An urban community is a society that is in an urban area (town or city) Rural is a nature community an â¦ d Urban is a busy city, town or community. 41 people found this useful. Manan Amin. 5 Contributions.