When liquid water is poured onto a flat plate of glass, it spreads out, while liquid...

When liquid water is poured onto a flat plate of glass, it spreads out, while liquid mercury forms spherical beads under similar circumstances. Explain the difference in behavior of the two liquids by filling in the blanks in the following statements: The attractions between the water molecules and the glass are _____ than the attractions among the water molecules themselves, so the water spreads out. The attractions among the mercury atoms are _______ than the attractions between the mercury atoms and the glass, so it maintains a spherical shape.

Solutions

Expert Solution

Surface tension:

The energy which is needed to improve the surface area of a liquid is known as surface tension.

Surface tension is depends on the strengths of intermolecular forces means greater the intermolecular force have high surface tension and lower the intermolecular force have low surface tension

The attractions between the water molecules and the glass are STRONGER than the attractions among the water molecules themselves, so the water spreads out. The attractions among the mercury atoms are STRONGER than the attractions between the mercury atoms and the glass, so it maintains a spherical shape.

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

Ice cubes at 0 c are poured into a glass that contains 150 g of liquid...

Ice cubes at 0 c are poured into a glass that contains 150 g of liquid water at 20 c. The contents of the glass are gently stirred and after short time the ice melts and the liquid cools to 0 c. No appreciable heat exchange with the environment takes place. a) calculate the entropy change of the universe (system plus environment) during the process. Cp=Cv = 4.18 kj/kgK b)if the same process were performed reversibly, how much useful work...

Two flat plates of glass with parallel faces are on a table, one plate on the...

Two flat plates of glass with parallel faces are on a table, one plate on the other. Each plate is 11.0 cm long and has a refrac- tive index of 1.55. A very thin sheet of metal foil is inserted under the end of the upper plate to raise it slightly at that end, in a man- ner similar to that discussed in Example 35.4. When you view the glass plates from above with reflected white light, you observe that,...

A curved piece of glass with a radius of curvature R rests on a flat plate...

A curved piece of glass with a radius of curvature R rests on a flat plate of glass. Light of wavelength ? is incident normally on this system. Considering only interference between waves reflected from the curved (lower) surface of glass and the top surface of the plate, find the radius of the nth dark ring.

A uniform thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.56). When monochromatic...

A uniform thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.56). When monochromatic light, whose wavelength can be changed, is incident normally, the reflected light is a minimum for ?=515nm and a maximum for ?=644nm. What is the minimum thickness of the film? tmin = .....?..... nm

Consider the flow of a liquid metal past a flat plate (Pr << 1). We have...

Consider the flow of a liquid metal past a flat plate (Pr << 1). We have shown that for a constant wall teemperature, T_o, the Nusselt number is given by Nu = 0.564*(Re^1/2)*(Pr^1/2). Show that if the surface is not a constant temperature, but is instead providing a constant heat flux, that the Nusselt number becomes Nu = 0.886*(Re^1/2)*(Pr^1/2). Start with the following expression for the temperature profile within a semi-infinite body with a constant heat flux boundary condition T...

A liquid flows tangentially past a flat plate of dimensions total length of 4 m (parallel...

A liquid flows tangentially past a flat plate of dimensions total length of 4 m (parallel to the flow direction) and width of 1.5 m. fluid velocity is 1 m/s (length wise). What is the skin friction drag (shear force) on both sides of the plate? liquid density = 1000 kg/m3, dynamic viscosity = 2 x 10-2 N*s/m2.

Heat & Mass Transfer Consider the flow of water over a flat plate at a film...

Heat & Mass Transfer Consider the flow of water over a flat plate at a film temperature of 25 °C. The plate is 10m long, and the Reynolds number at the end of the plate is 106. Determine: The free stream velocity Is the flow laminar or turbulent at the end of the plate? Is the flow laminar or turbulent at the mid-length? What is the average Nusselt number? What is the average heat transfer coefficient? What is the Nusselt...

Analytical Solution steps For a flat plate solar collector, with water as the working fluid, consider...

Analytical Solution steps For a flat plate solar collector, with water as the working fluid, consider a design for heating water from 22°C to 60°C. The temperature of the air and the surroundings is 310 K. The system is designed for a flow rate of 0.03 gpm. The water exhibits fully developed, laminar flow in a 0.05 diameter pipe, with a constant surface flux. The collector plate experiences losses due to convection and radiation, which can be accounted for using...

What difficulties might be encountered if water were used as the thermometric substance in a liquid-in-glass...

What difficulties might be encountered if water were used as the thermometric substance in a liquid-in-glass thermometer?

We used dichloromethane to perform a liquid-liquid extraction to pull Eugenol out of our water distillate....

We used dichloromethane to perform a liquid-liquid extraction to pull Eugenol out of our water distillate. Briefly describe how a liquid-liquid extraction works.

Subjects