![subject](/tpl/images/cats/himiya.png)
![ansver](/tpl/images/cats/User.png)
Answers: 2
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 10:30
What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 11:50
If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 12:30
Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together
Answers: 1
You know the right answer?
What are you most likely to observe when an endothermic reaction is taking place?...
Questions
![question](/tpl/images/cats/en.png)
English, 28.05.2021 19:20
![question](/tpl/images/cats/health.png)
Health, 28.05.2021 19:20
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.05.2021 19:20
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.05.2021 19:20
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 28.05.2021 19:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.05.2021 19:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/en.png)
English, 28.05.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 28.05.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 28.05.2021 19:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 28.05.2021 19:20