Practice

Translate the following sentences paying attention to the gerundial constructions.

1. Experiments showed that the starting products did indeed contain impurities.

2. Identical procedures are followed in preparing the powder photographs.

3. Winkler prepared tetraethyl germanium by treating germanium tetrachloride with diethylzinc.

4. Having analyzed antimony and mercury properties we came to the conclusion that they were incompatible .

5. Instead of having a magnetic susceptibility the substance proved to be diamagnetic.

6. Considering hydrolysis as the first order reaction it is possible to draw some conclusions.

7. While agitating the mixture no temperature rise was observed.

8. In approaching the double bond the radical may be visualized as a particle drawing out electron from electron cloud.

9. The possibilities for investigating the electronic structures of intermediate phases are very promising.

10. They pointed the reaction proceeding via two routes.

11. The extraction process can be economic on the basis of uranium being a by-product of the superphosphate.

12. Nitrobenzene cannot be heated above 170 ^o C with sulphuric acid without violent decomposition.

13. The reaction must have taken place with the data showing a change in the infrared region.

14. In a view of the reaction proceeding via other route the results were different.

15. Care must be taken to prevent moisture from the bottle diffusing into carbon dioxide tube.

16.

On the basis of radius of the boron atom being 0.89 A, the apparent electron affinity of boron trifluoride was calculated to be 6.1 electron volts.

17. Under conditions which lead to a significant fraction of ammonium cyanate being associated as ion-pairs the treatment of the data should be different.

Part 2

Exercise 1.Read and translate the text.

<== попередня сторінка	\|	наступна сторінка ==>
Texts for educational purposes	\|	Hydrogen bond

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