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Oxygen is just O and water is H2O
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∙ 13y ago
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How is H2O different from the elements that make up water?
Water is different from hydrogen and oxygen in the same way that wood ash is different from wood and oxygen. Both water and wood ash are the products of combustion.
What makes these two compounds different hydrogen peroxide and hydrogen and oxygen water?
Different ratio of hydrogen and oxygen
How many molecules of oxygen are produced when a sample of 29.2 g of water is decomposed by electrolysis?
4.88 x 1023 molecules of O2
Why could the IR spectrum of a sample which is contaminated with water lead to an erroneous conclusion that the compound is an alcohol or a phenol?
Alcohols, phenols, and water all contain a hydrogen covalently bound to an oxygen.
How do you distinguish between nitrogen oxide and oxygen using a chemical test?
Use a sample of pyrogallol (C6H6O6) in the sample followed by a combustion reaction. This compound absorbs oxygen present.
How do you calculate the concentration of oxygen in sample water?
If you want less oxygen breathe it in from the water or get a fish to do it
What are biochemical oxygen demands?
BOD is the oxygen necessary for living organisms in a sample of water for the degradation of organic compounds.
Which change in a sample of water could indicate that heterotrophic microbes were active?
a decrease in oxygen level
Which change in a sample pond water could indicate that heterotrophic microbes were active?
a decrease in oxygen level
What is the ratio of hydrogen to oxygen in this sample of four water molecules?
2:1 ratio. There would be eight atoms of hydrogen and four atoms of oxygen.
What is mean chemical oxygen demand-?
The mean oxygen demand is the test done to indirectly determine the amount of organic compounds present in a water sample.
How is H2O different from the elements that make up water?
Water is different from hydrogen and oxygen in the same way that wood ash is different from wood and oxygen. Both water and wood ash are the products of combustion.
What is the ratio of elements in water?
The answer depends on the context. Hydrogen is the most abundant element (by mass) in the universe while oxygen is the most abundant in the earth's crust. The ratio of hydrogen to oxygen, in the universe is 75:1 whereas for the earth's crust it is 7:2305 (= approx 0.00304).
What makes these two compounds different hydrogen peroxide and hydrogen and oxygen water?
Different ratio of hydrogen and oxygen
What is a biological oxygen demand?
A biological oxygen demand is another term for a biochemical oxygen demand - the amount of oxygen needed by aerobic microorganisms to decompose all the organic matter in a sample of water - used as a measure of pollution.
Give sample of different sources of water?
ice, water melon, the majority of fruits, jucies, and vegies
How does oxygen level vary in different forms of running water?
Water that has been exposed oxygen typically contains 2-3 millimole of oxygen.
