Mixing Definition and 283 Threads

Homework Statement when ethanol an dwater are mixed, is randomness increased or decreased Homework Equations The Attempt at a Solution Since these are miscible, I 'm equating that with 'comfortable' as a mixture and the 'comfort' being like a smaller amount of entropy than when...

"What would be the final temperature if you mixed a liter of 20 degrees C water with 2 liters of 40 degrees C water?" My teacher assigned us several problems like these without bothering to explain them. I have a hunch that they are embarrassingly simple to complete, but I know not how to...

I'm having a lot of trouble with an adiabatic mixing process. This is what I know: There's an airstream coming from outside and its temperature is T1=5 'C, its relative humidity being \varphi1= 90% at a rate of 20 m3/min. Another airstream is coming from inside and its temperature is T2= 25...

Homework Statement at 25C & 1 atm, absolute entropy of methane and ethane are 186.19 J/K/mol and 229.49 J/K/mol in gas phase. Find absolute 3rd law entropy of a solution containing 1 mol of each gas in ideal behavior. Homework Equations I think this is the equation to use: dSmix=...

I am running trials at work that require disinfecting of a glycerine-dye solution...I have been advised to add bleach but have always avoided mixing bleach/sodium hypochlorite with organic compounds eg glycerine. I have even heard of incidents in Dried flower industry where incorrect mixing of...

Homework Statement Alright, I know this has been done in various incarnations but I haven't found an example exactly similar to mine.. A tank contains 60kg of salt and 1000L of water. Pure water enters the tank at the rate of 8L/min. The solution is thoroughly mixed and drains at a rate...

Differential Equation mixing problem! Homework Statement A vat with 500 gallons of beer contains 4% alcohol (by volume). Beer with 6% alcohol is pumped into the vat at a rate of 5 gal/min and the mixture is pumped out at the same rate. What is the percentage of alcohol after an hour? The...

Hey, I have this problem that is for a grade, so I want to make sure I set it up correctly. I don't care about solving for the function or anything(I know I did that part correctly). Homework Statement A container has 10 pounds of salt dissolved in 100 liters of water. Pure water is pumped...

ive spent over 2 hours on this question and i am unable to solve it. If anyone could help it would be greatly appreciated. What is the pH of the solution that results from mixing the following four solutions together? (1) 150. mL of 0.250 M NaCl (2) 300. mL of 0.200 M HCl (3) 100. mL of...

Homework Statement What would be the final temp if you mixed 1 liter of 20°C water with 4 liters of 40°C water? This question is very straightforward, and is, of course, assuming total conservation of temp. Homework Equations My book mentions q=mc∆t, but using that equation, I get...

Homework Statement What is the pH of the solution that results from mixing the following four solutions together: (i) 150 ml of 0.250M NaCl (ii) 300 ml of 0.200M HCl (iii) 100 ml of 0.050M HNO3 (iv) 450ml of 0.200M NaOAc Homework Equations The Attempt at a Solution Firstly...

Mixing Problem... need help work shown! A tank with a 1000 gallon capacity intially contains 500 gallons of water that is polluted with 50 lb of particulate matter. At time (t=0), pure water is added at a rate of 20 gal/min and the mixed solution is drained off at a rate of 10 gal/min. How much...

There are two compartments, each has half volume of the total volume, separated by an insulating partition. The whole setup is adiabatic. n mole of a monatomic gas with temperature T1 and pressure P in the left while in the right m mole of monatomic gas with termparture T2 and pressure P there...

Homework Statement Assume there are two different kind of monoatomic ideal gas A and B. n moles of A are placed in a insulated compartment while m moles of B are placed in another insulated compartment. There is an insulated partition to join this two compartment. If the initial temperature...

I'm just wondering what happens when you mix HCI and NaOH, could anyone answer me?

Homework Statement What is the temperature of the resultant flow if you have 15 l/s of 14 degC water mixing with 76.4 l/s of 41 deg C water? Homework Equations The Attempt at a Solution delta T colder water = delta T warmer water

When a small bubble comes in contact with a larger bubble, what happens to their size? (a) smaller bubble becomes smaller & eventually vanishes while larger one becomes larger (b) both bubbles increase in size (c) both bubbles decrease in size (d) larger bubble becomes smaller while smaller...

A partition separates the two compartments of a vessel. The vessel is submerged in a constant temperature bath at 200C. Compartment A contains 2.00 kg of water at 200C, 50.00 bar and compartment B contains 0.983 kg of water at 200C, 1.00 bar. The partition is removed and the water in both...

I have noticed recently that when I pour coca-cola ( from a regular red can ) into a plastic cup then mix crown royal in it that this produces "eruptions", small streams of liquid shooting up from the surface of the drink. What is causing these? I have mixed drinks many times and never noticed...

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...

Homework Statement A lake, with volume V = 100km^3, is fed by a river at a rate of r km^3/yr. In addition, there is a factory on the lake that introduces a pollutant into the lake at the rate of p km^3/yr. There is another river fed by the lake at a rate that keeps the volume of the lake...

I'm going to fill a big container (3500 litres) with water. I'll use water from a hose, and boiled water, and I want to hit 40 degrees celcius. Now, I figured that this was straight forward, Temperature in hose = 10 C Temperature of boiled water = 100 C ( 100 * X + (3500 - X) * 10 ) /...

Hi Suppose there are two cylinders / vessels. In one cylinder the pressure is 1.5 bar & in other 0.5 bar.If both cylinder are connected internally through valve connection, what will be the final pressure in both? explain

Is there three wave mixing, or two wave mixing? why it starts with four? i am confused.

I have had a pressing question haunting my mind for quite some time, and I need an expert opinion. My car calls for premium fuel (2007 Honda Civic Si), yet states (in the owners manual) not to use gas below the octane level 87. Now I purchase my gas from Sinclair and the octane levels read...

Zernike mixing - ? Hi. I understand that Zernike was a physicist and that he did some work in optics, and am also aware of the Zernike Polynomials which are used in optics to describe aberrations in lenses, etc. What I do not understand is a comment that I got (from a non-native English...

I read that when salt and water are mixed that the overall volume decreases by 2.5% (I'm not sure if this is relative to the original volume of the water or both the water and the salt). I'm not sure why this is the case and am interested in that. Moreover, I'd like to know how one would...

>From a seminar, I heard that energy-momentum relation (E^2=m^2+p^2) is modified by UV/IR mxing. In other words, the speaker claimed that the lowest energy is achived not by zero momentum, but by non-zero momentum. Could somebody refer me to a relevant paper? Thanks in advance Youngsub

Is it possible with javascript to take one article from blog A, one article from blog B, one article from blog C, and show them all together in one big table, with one article per table cell? Even better, is it possible to mix blogs as above but without duplicating content on an intermediate...

Hello to all, I want to analyze and make model of the water mixing process as shown in file in attacment. Basically, there are two input variables: input hot water flow and cold water flow. There is constant flow FL3. I need to write equation that describe how level and tank's temperature is...

Homework Statement If you mixed 200g if ice that is at -5°C with 20g of water that is at 15°C, what will be the temperature and condition of the final state once equilibrium is achieved? Homework Equations Q=mcΔT, Q=mLf The Attempt at a Solution I know that the amount of ice is...

Homework Statement A tank contains 150L of water in which initially 30g or salt is dissolved. Brine runs in at a rate of 4 L/m and each litre contains 1.5g of dissolved salt. The mix in the tank is kept uniform. Brine runs out at 3L/m. What is that amount of salt in the tank at any time t...

Homework Statement A tank contains `100` kg of salt and `2000` L of water. A solution of a concentration `0.025` kg of salt per liter enters a tank at the rate `6` L/min. The solution is mixed and drains from the tank at the same rate. Find the equation for the amount of salt in the tank...

Homework Statement A brine solution of salt flows at a constant rate of 7 L/min into a tank that holds 30 L of brine solution in which was dissolved 1.7 kg. The solution inside the tank is kept well stirred and flows out of the tank at the same rate. If the concentration of salt in the brine...

I've struggled with this problem for a bit and I ran out of ideas. "We have a tank of volume K liters of alcohol. We remove one liter from the tank and add one liter of water. From the mix, we remove one liter and add one liter of water. We do this one more time. At the end of the process...

Homework Statement In some theory the electron neutrinos and the muon neutrinos mix like this: \mathcal{L}_{m} &= -\frac{1}{2}m\left(\overline{ \nu^{C}_{\mu\text{R}} }\nu_{\text{eL}} + \overline{ \nu^{C}_{\text{eR}} }\nu_{\mu\text{L}}\right) + \text{h.c.} Show that there exists a...

[SOLVED] Mixing Problem - Linear First Order ODE Homework Statement A 500-gallon tank initially contains 50 gallons of brine solution in which 28 pounds of salt have been dissolved. Beginning at time zero, brine containing 2 pounds of salt per gallon is added at the rate of 3 gallons per...

Can all phases of matter form mixtures? I can't use wikipdia because my computer won't let me

entropy increases? entropy decreases ? no change in entropy? diffusion, evaporating, mixing, melting, separation i think diffusion - increase evaporation - increase mixing - increase melting - increase but what about separation :S? and if anyone thinks any others are...

Homework Statement A mixing protocol for 5 containers of solvent consists of a repetition of the following procedure. The contents of each container are removed and divided up into pre-defined fractions. The various fractions are then poured back into the containers in a pre-assigned way...

Ok, so there's this movie, called Zeitgeist. It's an online documentary that mixes facts with made-up things, and proclaims some pretty crazy stuff. It makes the average person sick, angry, and feel goosebumps. As far as I have inquired, I've seen no, big, debunking website against Zeitgeist...

Homework Statement What mass of steam at 100 degree celsius must be passed into 5.4 kg of water at 30 degree celsius to raise temperature of water to 80 degree celsius? Homework Equations C(water)=4.2 J/(g C) L(steam)=2268 J/g The Attempt at a Solution Assuming no heat loss...

Hello everyone, Not that I looking to experiment or anything, but anyway...correct me if I'm wrong anywhere here...please. An associate of mine was wondering how to get rid of cat urine smell. Having exhausted all attempts to cover it up or use that enzyme stuff, I told him I usually treat...

hey i am wondering, what's the equation to find the result equivalent frequence of a mixture of two other different light frequences in same proportions ? (like if u have one red torch , and one blue torch , and u aim the light of each on the same zone) or is the result color not...

Homework Statement Which of the following mixtures would result in buffered solutions whn 1.0 L of each of the two solutions are mixed? (i) 0.10 M sodium chloride and 0.10 M sodium nitrite (ii) 0.10 M sodium chloride and 0.10 M ammonium chloride (iii) 0.10 M hydrochloric acid and 0.10 M...

Homework Statement A large tank initially hold 40 gallons of water. Pure alcohol enters at a rate of 2 Gal/min is well stirred and the mixture leaves at 1gal/min. What will be the concentration when of alcohol when the tank has 80 gallons of fluid in it. Homework Equations q= amount of...

Homework Statement When 1 kg of water at 100 C is mixed with 10 Kg of water at 0C, the equilibrium temperature will be: a) exactly 0 C b) Exactly 50 C C) Exactly 100 C d) slightly above 0 C I think that the answer is D) sligtly above 0 C, but i don't know why. I'm not sure what...

See here for first experimental evidence of D-Meson mixing (e.g., changing from matter to antimatter): http://sciencenow.sciencemag.org/cgi/content/full/2007/314/2 Is this predicted by Standard Model or not ? :confused: --- And, if it is a "new physics" what exactly type of "new physics" is...

Mixing Differential Equation -- need confirmation of the process. Homework Statement There is a box with 320 cubic feet of air mixed with .2 pounds of some some impurity. A small ventilation fan is added to the box at one end. Find the flow rate (R) of the fan as such that no more than .0002...

Let's say you have two powders (say, flour and brown sugar) which are to a certain degree mixed with each other. Is there a commonly accepted parameter that determines how well mixed this mixture is? Obviously there's a difference between having the mixture so unmixed that you can see a line...