Question

Brownian motion can be observed by using a device called a The relative density of alcohol is 0.8. Its density is

Answer 1

Brownian Motion is observed in various colloidal solutions using a MICROSCOPE (Simple or Compound microscope)

• Brownian Motion is the hapazard motion of the colloidal particles in the dispersed medium of the colloid.

• It contributes to the Kinetic Property of a colloidal system.

• Brownian Motion is responsible for stability of the colloidal solution.

• Microscope (simple or Compound) can be used to see the movement of the particles in the dispersed medium.

Given:

Relative Density of alcohol is 0.8.

To find:

The density of the alcohol

Calculation:

$\sf{RD = \dfrac{density \: of \: alcohol}{density \: of \: water \: at \: {4}^{ \circ} C } }$

$\sf{ = > 0.8 = \dfrac{density \: of \: alcohol}{1 }}$

$\boxed{ \sf{ = > density \: of \: alcohol = 0.8 \: g {cm}^{ - 3} }}$

Hope It Helps.

Answer 2

Given:

The relative density of alcohol is 0.8.  

To find:

Brownian motion can be observed by using a device called a The relative density of alcohol is 0.8. Its density is

Solution:

Brownian motion is the random movement of particles in a liquid/fluid due to the collision of particles with other molecules/atoms.

The botanist Robert Brown first observed this motion in 1827 using a microscope.

The relative density is the ratio of the density of alcohol to the density of water at 4 C.

Brownian motion can be observed by using a device called a microscope.  

The relative density of alcohol is 0.8. Its density is 800 kg m³ or 0.8 g cm³.