Liquids Definition and 198 Threads

Homework Statement cphenol/mole dm−3 0.05 0.08 0.127 0.268 0.496 γ/mN m−1 67.88 64.60 60.10 51.58 44.97 Estimate the relative surface excess concentrations of phenol in the concentration ranges of (i) 0.05 to 0.08 mole/dm3 and (ii) 0.268 to 0.496 mole/dm3 at the surface of an aqueous...

Hello, I have 3 questions please 1. Why does Alcohol evaporate easier then Water? 2. Why do liquids with a Higher Solids content have a higher boiling point then liquids with a lower Solids contents.How and why does Solids affect evaporation? 3. Why do liquids when under a lower...

Does anyone know which, if any, liquids or chemicals absorb infrared light but not visible light? In other words, something that looks clear but appears dark or black when viewed in infrared. Help is greatly appreciated!

REWRITTEN: Well if you're interested I have a tank (actually a PVC tube with an end cap) that has an interior diameter of 86 mm. It stands on its circular face. Coming out near the bottom of the tank at a right angle is a metal pipe 11 mm in diameter (interior) and 312 mm long (in total that...

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. A small hole is made in the side of each tank at the same depth h below the liquid surface, but the hole in tank 1 has half the cross-sectional area of the hole in tank 2. (a) What is the ratio...

I am an ameteur physicist (i actually have my degree in meteorology), and i have some questions about the EM properties of liquid metals or ferrous liquids when in spherical form. I understand if you are too busy or if i sound off, but if you do have the time to answer a few questions, it would...

Name a substance that will change from liquid state to solid state on heating.

Hello All, I'm not sure if this query belongs in the Atomic/Solid State/Comp. Physics category (vs. say, Classical Physics), but I'm fishing here anyway. I'm looking for current values of the empirical constants in the Tait equation of state, and/or the 'modified' (adiabatic) Tait EOS, for...

Homework Statement We were given an assignment to place corn syrup, dish washing detergent, shampoo, water and olive oil in a beaker, along with 6 non-metal objects, to show how they would separate based on their relative densities. The last problem on the paper states: "Write a hypothesis for...

Hi does exist some liquid or solid toxic compound? for toxic i don't mean mortal! Thanks

Hello,I just discover a interesting phenomenon at lunch time when I drink a glass of water: When I hold a glass in my hands, If I look from above at the innerwalls of the glass, we can see a very bright and clear image of patterns on your fingertips through the glass. But when I use...

What causes the pressure in Liquids(or gases)? Is it deep down of electromagnetic nature? By that i don't mean that there are macroscopic electromagnetic fields from a liquid under pressure but at the microscopic level the pressure is caused by electromagnetic force between the atoms/molecules...

Homework Statement Calculate the difference in entropy between solid cyclohexane at -20°C and supercooled liquid cyclohexane at -20°C. Verify that \frac{\Delta H_{ fusion.supercooled}}{T_{fusion.supercooled}} is not equal to the change in entropy. Homework Equations The Attempt at a Solution...

Homework Statement The container of uniform cross section area A holds two immiscible non-viscous incompressible liquids of densities d and 2d each of height H/2. A tiny hole of area S<<A is punched on the vertical side of the container at height h(<H/2) Find the speed of efflux...

From what I know, a liquid is H2O and its atoms are moving constantly. But when it freezes it atoms start to slow down and the liquid is a solid. So the question is there any other way to turn a liquid into a solid?

Homework Statement Why don't we take into consideration the concentration of pure solids and pure liquids in equilibrium constant expression? I read that their concentration per unit volume does not change. If the concentrations (moles per litre) don't change then it won't undergo any...

So I was reading an article late one night, and the writer tried to sound smart and mentioned how water "retains a memory" and if you splashed a few drops of water on your hand, the water would follow the same path, like how if you throw water on a window, the water will always "trace" the same...

Is the property of evaporation and spreading out of drop of ink in water is said to be example of diffusion in liquids or not? I think property of rapid intermixing of a substance to another is called diffusion so in liquids evaporation can be regarded as diffusion property.

I apologize if this topic should go elsewhere: this is not a homework question, but is a general question arising from reading about it in a book. Why is it dangerous to dive into high-density liquids (such as the Dead Sea) from, for example, a cruiser? Does the liquid, due to it's high...

Hi Why liquids behave as they do? I mean many sloids have density greater than some liquids e.g ice - water but still ice is solid and water liquid. This means flowability doesn't depend only on density. Then on what it depends? I mean how will you answer that why is this/that substance a liquid.

Homework Statement A mass of a liquid of density ρ is thoroughly mixed with an equal mass of another liquid of density 2ρ. No change of the total volume occurs.Homework Equations The Attempt at a Solution i tried to use ρ=\frac{m}{v} then v=\frac{m}{\rho} therefore v1+v2=V...

if you're given just the temperature and internal energy of R134A how do you determine the phase of the substance? If I was given the pressure instead of internal energy then i would just look in my tables to see if the pressure is above or below the saturated pressure and i would then know...

Homework Statement The quantity of liquid available in its storage tank is often monitored by a capacitive level sensor. This sensor is a vertically aligned cylindrical capacitor with outer and inner conductor radii Ra and Rb, whose length L spans the height of the tank. When a nonconducting...

Guys, our thesis defense is near already. It will be this thursday. I just want to know some more real life applications of Circular Motion involving liquids. The experiment we performed was we placed water inside a bucket then we spin it around. (Vertically) Some water spilled but most of the...

Homework Statement Im doing a chemistry assignment to do with collision theory at grade 12 level. It is an Experimental Investigation where i must vary the concentration, temperature and catalyst and relate the results to the collision theory. I am using the decomposition of Hydrogen Peroxide...

Hi, I've been away for quite some time but I'm back now. After some observations lately, I noticed an interesting thing about pouring liquids. While pouring a liquid out of a bottle (you should try out next time you pour your milk or somthing) the liquid, providing it is poured slowly and...

For my AH Physics investigation I'm going to research the refractive index of a liquid and need a few different experiment ideas to perform within my pretty basic school lab. An example of a feasible experiment would be much appreciated! I have thought about changing the...

How does contact angle change with temperature and why? Does capillary rise have a temperature dependence?

Recently, I came across some who suggested that a plasma between half the temperature of the sun (2889 K) and the temperature of the sun (5,778) would have the same burn patterns as lava. I felt skeptical about this for two reasons Lava's viscosity affects how it behaves. I did not think...

A thermometer has a quartz body within which is sealed a total volume of 0.400 cm3 of mercury. The stem contains a cylindrical hole with a bore diameter of 0.10 mm. How far does the mercury column extend in the process of rising from 10°C to 94°C? Neglect any change in volume of the quartz...

Hello all of you! I'm looking for reliable data about the dielectric strength (=breakdown field) of liquid insulators with a high permittivity and a low viscosity and not too dangerous. Examples of such liquids: - Ethylene glycol carbonate. Propylene glycol carbonate. Maybe the oxalates...

How do you calculate the pressure in fluids, for example water? With gases, you can use the ideal gas law, is there some similar formula to calculate the pressure for liquids?

Homework Statement There is a container of height 2 m it is filled with water upto the brim there are 2 holes made in it one hole of area 5cm^2 is made at a height of 1.5 m another hole of area 10cm^2 is made at a height of 0.5m through which hole will the water rush out with more...

Physics books and websites are full of Ideal Gas info and solutions when it comes to relating pressure, volume, and temperature. How about liquids? And solids? For example let us say a liquid in a horizontal pipe is under double the static pressure than it was originally. By static pressure I...

I'm curious as to why liquids don't stay hot/cold indefinitely in a thermos (the double cylinder which are separated by a vacuum). Thermal energy is being lost, but how? Is it being converted to another form and possibly radiated out like the sun does? But then I'd wonder why the container...

Hi all, I am wondering what the typical values of relaxation and retardation time for different real materials? I know these times depend on quite a number of things. But I just want to have a sense of the ratio of the two time scales for different real materials like blood, cervical mucus and...

I have done an experiment in which I measured the time and depth of the vortex of water, paint thinner (varsol), and vegetable oil. Water had the deepest and longest lasting vortex, paint thinner was a little less, then oil had a very minimal vortex that was gone right away. Now I'm trying...

An object rests on a high viscosity liquid like jelly what properties of the liquid keep it from breaking the surface of the jelly and sinking. (object deforms surface but doesn't break it) is it surface tension? Viscosity? How would the load carrying capacity of the jelly be tested?

I was just wondering. Say you have two different liquid with two different viscosities (water and oil, etc). If you have them in two different containers, and having the same amount in each container, say 500 mL. You heat them both to some temperature, say 100 F. Since liquid expands when it is...

hullo, i was wondering; does dalton's law ( pressure*mole fraction = partial pressure) hold for liquids? I'm doing a design project in uni on natural gas production. I'm trying to do a mass balance for the "hydrocarbon dewpoint contol" aspect of the "plant" which is oil absorption. I'm...

Dear topic mates! I'm an electric engineer and physicist student from Hungary. I looking for description of the spherical shock wave propagation in liquids. I need a formula which give the relationship between the propagation velocity and time. Additionally, I wonder the pressure at the...

My question is: Simple kinetic model for solids, liquids and gases. I searched on google and find these result but I don't know whether it was right. And also I think it is too long to do in an exam. :smile:. Please help me to check it. Thank you. Model for liquid This is the link for the...

Hello. I am currently at university doing a masters in theoretical physics and time has almost come for me to decide on what Msc project i want to do during the summer. I had the idea of quantum liquids, which, one my lecturers also seemed interested in my idea. Now, my backround is...

I'm looking for household liquids, preferable kitchen/cooking liquids with a low surface tension. I know of soap water, alcohol, and found olive oil. Any other ideas would be appreciated. I'm looking for something in the mid to low 20's mN/m or less. Thanks, -Eric

Homework Statement Problem : An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 15.2N. When completely immersed in water, its apparent weight is 13.7 N. What is the volume of the object? (The density of ethyl alcohol is 806 kg/m3...

Hi, I'm looking for an inexpensive liquid, that should be used as an insulator. My first pondering was if there is a way of converting water to insulators. Thanks in advanced.

Homework Statement The problem- http://img87.imageshack.us/my.php?image=physics4cw0.jpg Homework Equations Part of the problem is, I don't know which equations to use. (See below) The Attempt at a Solution Ok, I'm not quite sure how to approach this problem. It would help if I knew...

I just finished a question in which a u-shaped tube (manometer) is filled with water to a certain height. Another substance, in this instance, oil, is added to one side of the manometer. I was asked to find the height of the new substance. I used the formula P(water) = P(oil), or (ϱwater)gh =...

Is it advisable to not drink any liquids when chewing food? would that allow more saliva to develop as oppose to taking sips with every intake of food? And if more saliva develops would it be better for digestion?

Homework Statement Two liquids of equal mass, one at 50 degrees Celsius, and one at 20 degrees Celsius, have different specific heats. Suppose the colder liquid has the higher specific heat. If the two liquids are mixed together in an insulating container, the equilibrium temperature of the...