Chemistry, 14.04.2021 14:00 starlightmoon213
describe how a solid sample of calcium sulphate can be prepared using dil nitric v acid dil sulphuric vi acid and solid calcium carbonateā
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Chemistry, 21.06.2019 17:10
The concept of empiricism states that all rationally accepted knowledge is determined from experience. francis bacon was one of the first scientists to promote this theory. what was itās impact on society?
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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.
Answers: 2
Chemistry, 22.06.2019 03:30
In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?
Answers: 1
describe how a solid sample of calcium sulphate can be prepared using dil nitric v acid dil sulphuri...
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