Chemistry, 29.01.2021 01:30 berniece2002

What is the difference between an active, dormant, and extinct volcano ?

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Chemistry, 22.06.2019 01:20, whrjegt4jrnfdvj

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 13:00, cnfndbxbfbdb2031

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these

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Chemistry, 23.06.2019 00:30, mathwiznot45

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.

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Chemistry, 23.06.2019 03:30, alecnewman2002

The molar mass of iron(fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?