Definitionn. an oxide containing two atoms of oxygen in the molecule
Last update: August 16, 2015
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It may be prepared in the amorphous form by heating cobalt with sulphur dioxide, in a sealed tube, at 200° C. In the hydrated condition it is formed by the action of alkaline sulphides on cobaltous salts, or by precipitating cobalt acetate with sulphuretted hydrogen (in the absence of free acetic acid). [Please select]
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Silicon dioxide (SiO_{2}) is thus formed, which can be calculated to sodium silicate (Na_{2}Si_{4}O_{9}). [Please select]
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The clear solution is diluted with water free from carbon dioxide to the strength required. [Please select]
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Wash thoroughly with cold distilled water free from carbon dioxide. [Please select]
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Fatigue is caused by the accumulation of carbon dioxide and other impurities in the blood. [Please select]
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By photosynthesis, carbon dioxide from the air and water from the cell are combined in the green cells of leaves, forming sugar and possibly other substances. [Please select]
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The atmosphere contains three or four hundredths of one per cent of carbon dioxide, or an amount of about two to three thousand billions of kilogrammes. [Please select]
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