Chemistry, 29.06.2019 15:40 lizarroyo

How can you determine through observation that a mixture is a suspension

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You can determine through observation that a mixture is a suspension from the fact that particles separate and a solid substance is formed at the bottom of the mixture.

Explanation:

Suspensions are heterogenous mixtures where particles settle when times passes.

The partilces in suspensions are not dissolved (solvated by a solvent). The mixtures where the particles are dissolved are solutions. Then, solutions and supensions are different in that the former have the particles solvated and the latter not.

The particles in a solution are molecules or ions. Such solvated particles in a solution are very small; in comparison,the particles on a suspension are larger. Then, the weight of the particles in a suspension makes that they separate from the liquid and settle down.

Answer from: Quest

1. and 2. question: in which equation? or i don't understand you, 3. a), 4. c), 5. c), 6. b), 7. d), 8. d) if small number is underlined(behind symbol) , b) if big number is underlined(in front of symbol)9. what is underlined there? 10. c)

Answer from: Quest

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Write 15 uses of a mercury barometer along with its characterestics

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