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Sources of Oxygen
Sources of Oxygen - Oxygen is the most abundant of all elements in the crust of the earth. It is present in sand and rocks in the form of silicon dioxide, and in most of the common compounds like oxides, carbonates, nitrates, etc. It is also present in air, waterh..
Sources of Oxygen
Oxygen is the most abundant of all elements in the crust of the earth. It is present in sand and rocks in the form of silicon dioxide, and in most of the common compounds like oxides, carbonates, nitrates, etc. It is also present in air, water and land as organic compounds..
Sources
Rich sources of liver, kidney, milk, eggs, fish, pork and chicken. Vitamin B 1 2 is synthesized in micro-organisms and hence B 1 2 is found only in animal foods and absent in plant foo..
Oxygen Cycle
Oxygen Cycle - Oxygen is another essential element for living organisms. It is present in large quantities (20.95% v/v) in the atmosphere and is also seen in bound state in water and as oxides and carbonates in rocks. Dissolved oxygen in h..
Effect of Dissolved Substances on the Boiling Point of Water
When salt is added to boiling water the temperature of boiling water is raised above 100 o C. This is because the salt absorbs heat energy from the water for dissolving in it and its average kinetic energy decreases. When gases dissolve i..
Experiment to show solubility of oxygen in water
Take distilled water in a trough. Boiled and cooled water can also be taken since it does not contain dissolved air. Invert a gas jar filled with oxygen, over it, as shown in the figure (Fig.13.9). After some time, the level of the water rises insi..
Take distilled water in a trough. Boiled and cooled water can also be taken since it does not contain dissolved air. Invert a gas jar filled with oxygen, over it, as shown in the figure (Fig.13.9). After some time, the level of the water rises insi..Dissolving of Sugar in Water
When sugar is dissolved in water, it seems to disappear completely, and not even a very powerful microscope can show us the molecules of sugar in water. However, the solution obtained is evenly sweet. By evaporating the water, the sugar can be recovered in a..
When sugar is dissolved in water, it seems to disappear completely, and not even a very powerful microscope can show us the molecules of sugar in water. However, the solution obtained is evenly sweet. By evaporating the water, the sugar can be recovered in a..Sources Of Water
There are three main sources of fresh water. Rainwater Surface water (surface flow) Ground wat..
Earth as a Source of Elements
Distribution of various elements in the Earth's crust Water is one of the most abundant compounds on Earth, hence sea water is a vast source of a large number of elements. The Earth's atmosphere contains mainly nitrogen (78%), oxygen (21%), and other gases e...
Distribution of various elements in the Earth's crust Water is one of the most abundant compounds on Earth, hence sea water is a vast source of a large number of elements. The Earth's atmosphere contains mainly nitrogen (78%), oxygen (21%), and other gases e... Result
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