Прочитайте текст и найдите соответствующий перевод подчеркнутого слова Any chemically and physically...: ответ на тест 781669 - Английский язык

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Any chemically and physically homogeneous mixture of two or more substances is said to be a solution. It is possible to have solution of solids in liquids, liquids in liquids, gases in liquids, solids in solids, etc.
Depending on the size of the dispersed particles we recognize true solutions, colloidal solutions and suspensions.

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Any chemically and physically homogeneous mixture of two or more substances is said to be a solution. It is possible to have solution of solids in liquids, liquids in liquids, gases in liquids, solids in solids, etc.
Depending on the size of the dispersed particles we recognize true solutions, colloidal solutions and suspensions.

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If sugar is dissolved in water and the ultimate sugar particle is of molecular dimensions, then a true solution is formed. On the other hand, if very fine sand is mixed with water, consisting of many molecules, then a colloidal solution is formed.
From the pharmaceutical point of view solutions of solids in liquids are of the greatest importance.
The extent of solubility of different substances varies, but it has a constant value at constant temperature.

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The tablet is the most common form for the administration of a drug in a dry state.
A tablet shows definite properties of mechanical strength and is characterized by a definite rate of disintegration with water.

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For some drugs the addition of auxiliary substances is found to be necessary to overcome certain difficulties in their tabletting.
The application of different pressure during tabletting plays a very important role. Tablets that should dissolve in the mouth, must be more strongly compressed than the tablets for internal administration.

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About three quarters of the earth’s surface is covered with liquid water. In vapour form water is also an important constituent of the earth’s atmosphere. In combined form water occurs in minerals (for example in gypsum). Moreover, water occurs in animals and vegetables tissues. It constitutes about 70 percent of the human body and over 90 percent of some vegetables.