Chemistry, 01.08.2019 22:00 joannegrace869
Why metal oxides tend to be basic if the oxidation number of the metal is low and acidic if the oxidation number of the metal is high?
Answers: 1
Chemistry, 22.06.2019 01:20
1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.
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Chemistry, 22.06.2019 12:00
What is the lowest number energy level where a d sublevel is found
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Which are forms of frozen water? check all that apply. dew frost hail rain sleet
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Chemistry, 22.06.2019 19:00
How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy
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Why metal oxides tend to be basic if the oxidation number of the metal is low and acidic if the oxid...
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