Mixture Definition and 277 Threads

Homework Statement A gas mixture of 0.13 mol NH3, 1.27 mol N2, and 0.025 mol H2O vapor is contained at a total pressure of 830 mm Hg and 323 K. Calculate the following: (a) Mole fraction of each component. (b) Partial pressure of each component in mm Hg. (c) Total volume of mixture in m3...

Hello, my problem is as follows: " If 150 g of lead at 100°C were placed in a calorimeter with 50 g of water at 28.8°C and the resulting temperature of the mixture was 22°C, what are the values of q(lead), q(water), and q(cal)? (Knowing that the specific heat of water is 4.184 J/g °C and the...

Homework Statement An oil reservoir contains at water/oil contact (WOC) of 12000ft contains a water column at 800ft, oil at 500ft and gas at 600ft height Calculate the pressure at WOC, 12500, 11700 and 11000 ft? Homework Equations P = rho g h + Patm 1 ft = 0.305m Rho water =...

Homework Statement An ice-water mixture has a mass of 180g and is contained in a 100g aluminum calorimeter When 35g of steam at 100 degree Celsius is condensed in the water, the temperature rises to 50 degree Celsius. How much ice was in the container initially? The heat capacity of water is...

1. An oil reservoir with normal reservoir pressure at water oil contact (WOC of =12000ft) contains water, oil and gas columns of 800, 500 and 600 ft height respectively. Calculate reservoir pressure at WOC, gas oil contact (G0C) and depths of 12500, 11700 and 11000 ft? ρw = 1000 kg/m^3 ρo =...

Homework Statement I know the density of a mixture of water and glycol. I will call that dmix. I need to find the percentage of water and the percentage of glycol in the mixture. The only other thing I know is the temp. Homework Equations d=m/v The Attempt at a Solution What...

1. Homework Statement Question This is an experiment on a dilute isotopic mixture of helium gas. A spherical vessel of diameter 1 m is first filled with 4He gas to one atmosphere pressure. Then a small amount of 3He gas is introduced through a valve on one side of the vessel. Make a rough...

Homework Statement The specific heat of lead is 0.03 cal/g*C. 300 grams of lead shot at 100* C is mixed with 100 grams of water at 70* C. What is the final temperature of the mixture if the container is insulated. Homework Equations The Attempt at a Solution Q1 = c1m1(Tf - 100)...

Hi i am a brand new member to this forum i am studying to be a power engineer and thermodynamics is one of the courses I need to succeed. If i could get help with this problem it would be much appreciated. Homework Statement A perfectly insulated box contains 3.50kg of dry saturated steam...

Homework Statement A mixture is made by adding 75g of an unknown liquid at a temperature of 25 degrees Celsius to 60g of water at a temperature of 90 degrees Celsius. The final temperature f the mixture is 65 degrees Celsius. Calculate the specific heat capacity of the liquid. What is the...

Hi, I am new here, so please direct me if I am posting completely wrong here. Imagine a small enclosed chamber filled with dry H2O gas. The properties are: 0.5 Bar 8.0 kJ/(kg*K) 200C 2850kJ/kg An infinitely large reservoir of H2O gas has the following properties: 1.0 Bar 8.0kJ/(kg*K)...

Hi, I'm in lab in which we have to titrate 0.09M NaOH into 25mL of 0.1M HCl/HOAc mixture. Homework Statement I need help on how to calculate the concentration of HCl and HOAc in the mixture. 0.09M NaOH 1st equivalence point = 14.3mL 2nd equivalence point = 26.9mL Difference of two...

Homework Statement Calculate the temperature of a mixture of 0.3kg ice at 0°C and 0.3kg water at 75°C.Find the mass of ice meltedHomework Equations Specific heat capacity of water: 4200J/kg/°C Specific latent heat of fusion of ice: 334 000 J/ kg The Attempt at a Solution Got a negative answer...

Homework Statement "A mixture of calcium carbonate and magnesium carbonate with a mass of 10.000g was heated to constant mass, with the final mass being 5.096g. Calculate the percentage composition of the mixture, by mass." Homework Equations Decomposition equations. The Attempt at a Solution...

Ok so starting chem in college and were going over the real basic stuff. Sugar water is classified as a homogeneous mixture, but once water exceeds it's dissolving capacity wouldn't the sugar water be a heterogenous mixture? Or both?

Homework Statement In many spark-ignition engines, liquid fuel is added to the inlet air upstream of the inlet manifold above the throttle. The inlet manifold is heated to ensure that under steady-state conditions the fuel is vaporized before the mixture enters the cylinder. At normal...

Hey there. I've been searching the internet on volume contraction with water and methaol mixture. Although I have found a little bit of infomation I don't know why it happens. I found it quite intriguing that mixing 50ml of water and 50ml of Methanol =/= 100ml of liquid. In fact there is a 4%...

Homework Statement A mixture of 1.773kg of water and 227g of ice is in an initial equilibrium state at 273K, in a reversible process, brought to a second equilibrium state where the water-ice ratio,by mass, is 1:1 at 273K. Calculate the entropy change of the system during the process.Homework...

In a spherical vessel with a hydrogen H2 and oxygen mixture O2 it is stated in a problem that we can derive that the concentration of oxygen [O2] can be derived to be: P / 3RT. With P the total pressure, R the gas constant en T temperature? How on Earth is this possible? I thought the...

Hi folks, I like to recreate medival medicines from old manuscripts but I have come to a slight problem when it comes to the prepairation... I'm trying to separate sodium bicarbonate which is dissolved in water. What I usually do is have a baking dish like the one below filled with the...

Does a mixture of sugars have a Eutectic?

Homework Statement If 7.3 lbs of copper at 12540 deg. F. is added to .52 ft^3 of water at 35 deg. F. in an insulated container, find the equilibrium temperature. Homework Equations I Think I need to use: delta Q= c*m(Temp. final - Temp. original) c.c. = .092 BTU/lb (specific heat...

Homework Statement Ice cube at 0 degree is mixed with steam at 100 degree, both become water at 50 degree. Find the ratio of mass of the ice : mass of steam Homework Equations Q=ml Q=mcdT The Attempt at a Solution I tried this way : let the ratio of ice to steam = a:b a x...

If an ideal gas mixture is heated inside of a container which does not expand then does the entropy increase? Outside the container I know it would but inside the container the gases can't really become more disordered.

Anybody knows how can i calculate the density of: Light heating oil (C12H23): 840 kg/m3 and air: 1.185 kg/m3 The system is: oil burner in a small burning device and i want to calculate what density is in the inside the burning device. I want to know the density for LAMBDA: 1.2...

Homework Statement 1. Consider a mixture consisting of 5 v/o 239Pu and 95 v/o 23Na. Using the g′ = 1, . . . Homework Equations The Attempt at a Solution Is v/o volume percent? I have never ran across this notation before and am not too sure how to handle it. I tried googling it...

Homework Statement A 5.00-g sample of aluminum pellets (specific heat capacity = 0.89 J/°C · g) and a 10.00-g sample of iron pellets (specific heat capacity = 0.45 J/°C · g) are heated to 100.0°C. The mixture of hot iron and aluminum is then dropped into 96.5 g of water at 23.5°C. Calculate...

Tank w/ 100 gal pure water. At time = 0, sugar/water mixture with .2 lbs of sugar per gallon enters at 3 gal/ minute. Drain opened at bottom allows sugar solution to leave at 3 gal per minute. Perfect (lol) mixing occurs. I show the following: Rate in: .2 x 3 = .6 Rate out: x/100 Volume: 100...

Homework Statement What is the mass fraction of CO, CO2, H2, CH4, and Inerts in 3000metric tonnes of gas mixture, with mole percentages of: -3.52mol% CO2 -27.86mol% CO -67.99mol% H2 -0.21mol% CH4 -0.44mol% inerts Homework Equations basic conversions, although we don't know the molar...

http://www.youtube.com/watch?v=cgAlxBEPEf4&NR=1&feature=fvwp The guy in the video says something like "the salts going to allow the ice to stay at its freezing point without melting." I've always thought that adding salt to ice/water mixture lowers the freezing point, and therefore melts the...

What happens if you cool the mixture of water vapor and air to the temperature lower than 273 K? Since saturation pressure is higher than 0 some vapor should stay in the air. In the solid form?

Homework Statement One kg of steam at 100 degrees Celsius is added to 1 kg of ice at 0 degrees Celsius. What is the composition and temperature of the resulting mixture. The heat of fusion for water is 79.7 kcal/kg, the heat of vaporization is 539 kcal/kg, and specific heats of ice and water...

Homework Statement A mixture of phosphoric acid and NaH2PO4 are titrated against 0.151 M NaOH. The first equivalence point is at 0.00345 L and the second equiv point is at 0.01288 M. The volume of the total mixture was 60 ml. Calculate the concentration of both the phosphoric acid...

Homework Statement A saturated water mixture is heated. P1=200kPa m=0.5kg V1=0.3m^3 V2=0.6m^3 find T1 T2 Internal Energy 2. The attempt at a solution Using the pressure tables and interpolation I found T2=120.12 stuck on T2 and internal energy.

hey, I need all the help i can get on this one... can u guys tell me if there is any device that can be used instead of an ordinary fuel injector since i want it to be able to inject an air-fuel mixture. since the normal injector can't inject air i desperately need another device...

Hello All, I have a quick question for you. I have small sample of a cement-like-like-material and I am high shear mixing it using a power drill and a impeller blade. The material is placed a beaker and the impeller blade shears the cement of the bottom of the beaker. I would like to...

Does mixture of hydrogen and oxygen actually has to be ignited or the reaction occurs even without ignition when some critical H:O proportion is reached?

Homework Statement A 300-gal capacity tank contains a solution of 200 gals of water and 50 lbs of salt. A solution containing 3 lbs of salt per gallon is allowed to flow into the tank at the rate of 4gal/min. The mixture flows from the tank at the rate of 4 gal/min. The mixture flows from the...

I have a number of materials all mixed together in a beaker, my task is to extract each material individually, and get the weight of those materials. The materials in the beaker are: -Olive Oil -Copper 'bits' about the size of rice grains -Beach Sand -Iron Filings -Gravel - pebbles...

Homework Statement 1 gram of Hydrogen H_2 and 1 gram of Helium He are put together into a container of 10 L in volume and at a temperature of 27°C. (a) Find the pressure (b) Find the molar specific heat capacities C_v and C_p, as well as \gamma = \frac{C_p}{C_v} of this gas mixture...

a precipitate of agcl and agbr weighs 0.4066gm on heating in a current of chlorine the agbr is conveted to agcl and the mixture loses 0.725gm in weight.find the %cl in original mixture i tried it from the reaction 2agbr+cl2-2agcl+br2 is the problem on limiting reagent?please help

Homework Statement A 0.0450 M solution of para-aminobenzoic acid had an absorbance of 0.844 at 267 nm in a 1.00 cm cuvet, and an absorbance of 0.034 at 240 nm. A 0.0366 M solution of nicotinic acid had absorbances of 0.010 and 0.755 at 267 and 240 nm, respectively. A MIXTURE of PABA and...

Sulphur trioxide is to be separated from a gas mixture containing N2, O2, and SO3. Propose a method for carrying out this separation and briefly outline the procedure for calculating the composition of streams leaving your chosen separation unit. Could anyone provide some guidance to me...

Homework Statement A rigid tank of volume "V" contains salt dissolved in water at a concentration "C". Fresh water flows into the tank at a rate of "F". A fraction "x" of the exit flow is recirculated back into the entrance flow. Given: V, Volume of tank Fin, Flow rate in Fo, Flow rate...

Consider a 5.430-g mixture of FeO and Fe3O4. You react this mixture with excess of oxygen to form 5.779g Fe2O3. Calculate the percent by mass of FeO in the original mixture.

Hey, Does anyone know the unique features of mixed refrigerants and why they mix refrigerants instead of using just pure refrigerants? Thanks, Alexisonsmith

Homework Statement "A 1.60 g sample of a mixture of naphtalene, C10H8. and anthracene, c14H10 is dissolveed in 20.0g of benzene, C6H6. The freezing point of the solution is 2.81C. Pure Benzene freezes at 5.51C and has a Kf = 5.12C kg/mol. Determine the composition (mass percentage) of...

Homework Statement A 1.22 kg piece of iron at 126.5 degrees Celsius is dropped into 981 g of water at 22.1 degrees Celsius. The temperature rises to 34.4 degrees Celsius. What will be the final temperature if this same piece of iron at 99.8 degrees celsius is dropped into 350 mL of glycerol...

Homework Statement 50cm^3 of a mixture of CO, CO2 and H2 were exploded with 25.0cm^3 of O2. After explosion, the volume measured at r.t.p. was 37.0 cm^3. After treatment with aqueous KOH, the volume was reduced to 5.0cm^3. Calculate the % composition by volume of the original mixture...

I'm curious about how a SN1 reaction can yield only one product (if it can, at all), rather than two (ultimately leading to a retention of stereochemistry). Would sterical reasons and/or its orbitals also have any play into this? Thanks!