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It neutralises soil acidity.
It absorbs acidic waste gases from industries.
It is used in making of cement.
Used in making of toothpaste.
Belan answered the question on February 13, 2019 at 10:13
- An oxide of copper in a porcelain boat was reduced by a stream of hydrogen. The results obtained were as follows.
Mass of porcelain boat=4.5g
Mass of...(Solved)
An Oxide of copper in a porcelain boat was reduced by a stream of hydrogen. The results obtained were as follows.
Mass of porcelain boat=4.5g
Mass of boat + Oxide=6.40g
Mass of boat + Copper=6.02g
(i)Determine the empirical formula of the oxide.
(ii)If the relative formula mass of the oxide is 80,determine its chemical formula.
(Cu =64, O=16)
Date posted: February 13, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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It takes 30 seconds for 100cm3 of carbon(IV)oxide to diffuse across a porous plate. How long will it take 150cm3 of nitrogen(IV)oxide to diffuse across the same plate under the same conditions of temperature and pressure?
(C=12.0,N=14.0=16.0)
Date posted: February 5, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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Date posted: February 5, 2019. Answers (1)
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Date posted: February 4, 2019. Answers (1)
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Date posted: January 21, 2019. Answers (1)
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Date posted: January 21, 2019. Answers (1)
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Date posted: January 21, 2019. Answers (1)
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Date posted: January 21, 2019. Answers (1)
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Date posted: January 7, 2019. Answers (1)
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Date posted: January 5, 2019. Answers (1)