Chemistry, 25.09.2019 15:00 abby894927
Aswimming-pool worker wants the pool's ph to be 7.2. she comes by to test the water and finds that the ph is 9.2. what should she do to correct this situation?
Answers: 1
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.
Answers: 2
Chemistry, 22.06.2019 10:10, dhailyortegacampa131
Stage in which a typical star has completely stopped fusion
Answers: 1
Aswimming-pool worker wants the pool's ph to be 7.2. she comes by to test the water and finds that t...
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