1. formic acid, hfor, has a ka value of 1.8x10-4.
a) what is the ph range of a formic acid (hfo...
Answers: 3
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 02:10
What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .
Answers: 3
Chemistry, 22.06.2019 12:30
Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?
Answers: 2
Mathematics, 21.10.2020 14:01
Social Studies, 21.10.2020 14:01
German, 21.10.2020 14:01
Computers and Technology, 21.10.2020 14:01
English, 21.10.2020 14:01
History, 21.10.2020 14:01
Engineering, 21.10.2020 14:01
Advanced Placement (AP), 21.10.2020 14:01
Mathematics, 21.10.2020 14:01
German, 21.10.2020 14:01
Mathematics, 21.10.2020 14:01
Mathematics, 21.10.2020 14:01
English, 21.10.2020 14:01
English, 21.10.2020 14:01