Salt Definition and 265 Threads

I was wondering also if you put a magnet above it, then lifted the magnet up,would the nitrogen and salt come up too?

Homework Statement A 0.100 M solution of sodium palmitate (C15H31COONa) is separated from a 0.200 M NaCl solution by a membrane barrier that is permeable to Na+ and Cl-, but not to palmitate ions. I need to calculate the concentrations of the ions on both sides of the barrier once...

Homework Statement Given a mixture of salt and sodium carbonate, how could you determine the amount of sodium carbonate in the mixture?Homework Equations The Attempt at a Solution Salt and sodium carbonate are both soluble, so I would I use HCl to react with the Na2CO3 leaving the NaCl H20 and...

If a salt crystal forms after 3 days of evaporation, and the crystal mass is 30 mg, how many Na+ and Cl- ions was added to the crystal each second (average). How do I solve this?

Hello all, How strong a current can I move though water? Googling I have found only conductivity of salt water, but what is water's impedance? Can I create 1 ms pulse of 500 volts and 1 A using salt water? I want to use salt water as electrodes: two metal electrodes submerged in two...

I'm not sure where this question belongs, maybe in chemistry? move it if necessary. so the quest is this I have a salt crystal lamp. it is a large block of salt on a wood base with a light bulb inside a hollow in the salt. the selling point of these lamps is that the heat from the...

Density = mass/volume (D=m/v), explain the difference in density of pure & salt water in words and using a mathematically based example

I want to measure salt brines. I can measure specific gravity and degrees Fahrenheit. I need a formula that I can insert the two measured values into and get the degree of saturation of my brine. I can't find a formula. I'm not sure a formula exists, but I can't understand why not. There are...

I'm currently training hard for a top amateur soccer team in my area. After a few training sessions my muscles are destroyed. I have severe DOMS (delayed onset muscle syndome). I was reading some online material about Epsom salts (magnesium sulfate) and how they claim to relieve muscle pain...

Can anyone tell me what a linear salt gradient is?

I am trying to include salt water in my Rube Goldberg project. Instead of the wires that connect a motor simply being continuous, I want to bridge a connection through salt water. Meaning, but one wire, put both ends in the solution so that the connection still works. But its not working. Are...

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...

Homework Statement Explain why Na2CO3 gives a basic solution when dissolved in water. The Attempt at a Solution The cation is Na+ while the anion is CO32-. The cation has no affinity for neither protons nor hydroxide ions. The anion should have basic properties to make a basic...

Any one know of a machine/chemical to convert Salt water (8.8lb-9.4lb) to Fresh water (8.6lb) on a LARGE scale?? I have read several things on converting using the sun to evaporate the water, but that's only like a liter a day. I would love to find something or have something made that would...

Not sure if I'm in the right forum, but does anyone know anything about the mechanism behind using radio waves to disassociate hydrogen and oxygen atoms from salt water?

Can anyone tell me what the density of salt is on average? I know there are many types of salt, but there must be an average value to this right? Because I’ve got the volume of this salt particle and I need its density in order to work out the mass. I also want to plot a graph of Intensity...

Hello, can anyone tell me the equation to the Mie scattering. I have salt particles of a specific size, and I want to work out the Mie scattering of it. Thanks a lot From steve.

Why does salt and ethanol affect carbon dioxide production in the fermentation process of sucrose? Is it because the yeast has to break the sugar down by hydrolysis and that ethanol and salt are soluble, thus, in 'competition' with the yeast because they are occupying needed water molecules...

How would I go about deriving the cooridinate numbers of both ions in rock salt, and, how could I account for the differences in lattice enthalpy between the following; LiCl (861 kJ/mole) - NaCl (787) LiCl - LiF (1046) LiCl - MgO (3850) Cheers.

Homework Statement If NaCl dissociates into Na+ and Cl- ions when dissolved in water, why does the solution still taste salty? Homework Equations None The Attempt at a Solution I think its because a chemical change hasn't happened. Am I right? Can someone go into a bit more detail...

Iam doing an experiment on voltaic cells in particular Iam studying the effect that the thickness of the salt bridge has on the emf of the cell over time. iam thinking that the thicker the salt bridge the longer it will last. I think that will happen because maybe there is more surface area...

I am doing this test on DPPH (a chemical salt [(C6H5)2N-NC6H2 (NO2)3]) The goal of the experiment is to study The Electron Paramagnetic Resonance or The Electron Spin Resonance Buy using this way: see it in the file

This article; http://www.shns.com/shns/g_index2.cfm?action=detail&pk=SALTASFUEL-09-10-07 , from Scripps Howard talks about what appears to be a new method for seperating Water into Hydrogen and Oxygen by exposing it to an RF generator. From the Article: The article seems to make a big...

Hello good members and guests of PhysicsForums. Whats the deal with this? Are we going to be fueling vehicles with sea water now? http://green.yahoo.com/index.php?q=node/1570

Does anyone think anything will come from this? http://news.yahoo.com/s/ap/20070910/ap_on_sc/burning_seawater

High School Geometry Homework Statement When the concentration of salt in a lake is greater than three percent by weight, the lake is a salt lake. Find the percent of salt by weight for each of the water levels of Mono Lake Shown in the table. One liter of water weighs 1kg or 1000 grams...

I understand that NaCl and NH4HCO3 are reciprocal salt pairs. What does this mean?

I have designed a science experiment for my project in which i see whether a magnet gets weaker when it rusts. So, i take a magnet that is not rusted and see how many paper clips it can pick it up. Then, i rust it and see how many paperclips it can pick up after that. I need to finish this...

Generally, when you melt a salt (CaCl2 @800deg C specifically) are the ions disassociated as in a solution or is molecular vibration simply great enough to not allow the formation of intermolecular bonds and the atoms are floating around still paired? This is probably a dumb question and my...

In an argon atmosphere, there is a pure platinum crucible that is used to heat Calcium Chloride salts to 850 deg C. After it is heated, pure chlorine gas is bubbled through the molten salt to remove CaO impurities. The heating method is by induction heating. My questions/concerns: Since we...

In order to prepare an insoluble salt, there must only be a solid present right? The rest must be soluble and in aqueous state right?

in a recent chemistry experiment at school, two voltaic (galvanic) cells were set up with the same solutions in either beaker (one being Copper Sulfate, and the other was another metal solution) anyway, one had a potassium nitrate salt bridge, the other a copper wire salt bridge... sooooooooooo...

For this problem I don't think I am setting up the linear system right: Two tanks containing 500 gal of salt solution. Pure water pours into the top tank @ 5gal/s. Salt solution pours out of the bottom of the tank and into the tank bellow @ 5 gal/s. There is a drain @ the bottom of the second...

why magnesium nitrate does not react with sulphuric acid?:confused: can somebody help answering? thank you.:smile:

What is the shape of salt crystals.??

This problem has been perplexing me all week, it doesn't look hard but somehow I can't get the right answer. The question is - A salt tank of capacity 500 gallons contains 200 gallons of water and 100 gallons of salt. Water is pumped into the tank at 3 gallon/min with salt of 1 lb/gallon...

I'm not sure if this would be better in another thread of not but here I go... I have heard that if you put salt into water it will make it boil faster. Several people have also told me they read this same statement in cooking magazines and what not. Not wanting to trust a cooking magazine...

Well, today in my chemistry lab, my teacher let us out early without getting the class to answer a few questions, and now I'm stuck on my lab report! We were supposed to have a class discussion, but we didn't. I was wondering if anyone knew how to answer the following questions: If delta G...

69. Calculate the Ksp for each of the salts whose solubility is listed below. a) CaSO[SIZE="1"]4 = 3.3 x 10-3 mol/L b) MgF[SIZE="1"]2 = 2.7 x 10-3 mol/L Answers: a) Solution 1. Write the dissociation reaction and the Ksp expression for the equilibrium reaction. Thus...

hello there about wat temp does ,Iron oxide, aluminum, baking soda, table salt melt? degress F please. and about how hot does a US conventional gas stove get? thanks. and aluminum foil is pure aluminum right?

Which one of the following salts, when dissolved in water, produces the solution with the lowest pH? a.NaCl b.NH4Cl c.MgCl2 d.AlCl3 Ammonium chloride My answer lies with b or d since they are both acidic salts, but I think is it d since the K_a is greater...

Today while sitting parked in my FIL's van, the one I just put a new thermostat in, but failed to really test to see if it would overheat? A couple miles down the road, it pegs the temp guage. I put the OEM of 192* instead of 160* because it wasnt passing smog, they said the computer this/that...

I was doing a simple experiment with my class to demonstrate the boiling point of water.Two of the students wanted to see what would happen when we added salt. So, the students added about 50 ml of common table salt to less than 200 ml of boiling water. The temperature of the water immediately...

I've been told (by my high school chemistry teacher, which obviously means it isn't necessarily true), that when salt dissolves in water, that you cannot centrifuge it out. I understand that you can't centrifuge it out like you would sugar, or something that doesn't ionize, but it seems to me...

Could someone direct me to research on using magnetic fields to move salt water through a nozzle for slow propulsion in salt water.

quick help! Hi I need help with two quick questions... thanks in advance... With the same type of agitation and at the same temperature, why would sugar disolve in water much faster then salt does? discuss the idea that the standard of living in a society might be measured in units...

For water at 30°C, when 100 g of pure water the vapor pressure is 31.82 mm Hg and when 50g of NaCl dissolved in 100g of water vapor pressure is 27.68 mm Hg The vapor pressure of pure water is different than the vapor pressure of water in a salt water solution. Explain why. Can anyone...

Does anyone know of a list I can check to see what salts burn diffrent colors?

Three Students were asked to find the identity of the metal in a particular sulfate salt. They dissolved a 0.1472-g sample of the salt in water adn treated it with excess barium chloride, resulting in the precipitation of barium sulfate. After teh precipitate had been filtered and dried, it...

Hi, i have this practical experiment coming up. i need any help available. i need to separate sand, salt, water through whatever means necassary. Thanks in advance.