![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
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
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 11:00
What is the temperature of 0.750 mol of a gas stored in a 6,850 ml cylinder at 2.21 atm? . 2.95 k 5.24 k 138 k 246 k
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 14:00
Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules
Answers: 1
![question](/tpl/images/cats/himiya.png)
You know the right answer?
Can an atomic model ever be perfect?...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2021 17:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2021 17:30
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2021 17:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 19.07.2021 17:30
![question](/tpl/images/cats/himiya.png)
Chemistry, 19.07.2021 17:30
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2021 17:30
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2021 17:30
![question](/tpl/images/cats/istoriya.png)
History, 19.07.2021 17:30
![question](/tpl/images/cats/mir.png)
World Languages, 19.07.2021 17:30
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2021 17:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2021 17:30
![question](/tpl/images/cats/biologiya.png)