Kuidas hoida meie linna Clean partnerluste loomine

How to keep our town. We are Muslims we should follow the teaching of Islam. Islam gives us the sense of purity cleanliness.We should therefore be clean in action and thought. Our holy prophet (peace be upon him) loved cleanliness, we should feel proud of following his footsteps. In Advanced countries even today people dust their houses and its surroundings themselves.In the evening the sprinkle water on the roads in front their houses. These things may be a cause of an epidemic Loe rohkem [...]

Homoloogilise rea ja omadused homoloogilise rea

Homologous series and characteristics of homologous series Definition; Series of organic compounds which have a same functional group, similar structural feature but differ from each other by an integer number of CH2(metüleenrühm) kutsutakse "homoloogilise rea". Arv homoloogilise rea erineb molekulmassiga 14. Omadused homoloogilise rea: Kõik numbrid homoloogilise rea sarnaseid struktuure. Physical properties of homologous series change progressively Loe rohkem [...]