Boiling point Definition and 128 Threads

How much salt per quart does it take to raise the temperature of water to 325 degrees at 28 PSI? I am sorry to say I am not educated in physics but I do understand the more particles in the water the higher the boiling point. I am trying to plasticize animal horns in a pressure cooker with a...

Hi, I'm looking through wikipedia for a formula to calculate the boiling point of liquids in function of the atmospheric pressure but I didn't find any. In fact I'm curious what it would be for water on the Moon, Jupiter and so on. By the way, is the fusion point pressure-dependent? I...

1. A thermometer is calibrated wrongly. At the melting point, it reads -10 degree celsius. At 50 degree celsius, it reads 60 degree celsius. What does the thermometer read at the boiling point? 2. I think this is logic-based. 3. I drew a table but got confused.

Homework Statement In Breckenridge, Colorado, the typical atmospheric pressure is 520. torr. What is the boiling point of water (ΔH = 40.7 kJ/mol) in Breckenridge? What pressure would have to applied to steam at 331°C to condense the steam to liquid water? Homework Equations Not...

Homework Statement At what temperature does water boil on the top of mount everest, elevation z = 8848m? Recall that the dependence of pressure with altitude is give by: P=P_atm * exp(-MWgz/RT) MW=molecular weight of the gas, P_atm =atmospheric pressure, g is the gravitational...

HCOOH C_4H_10 C_2H_6 CH_2 H_2they all are polar covalent except H_2 which is pure covalent how to sort them??

I've been searching for a DME + H2O boiling point composition curve. Can someone help me here or give me a clue how to calculate the curve?

Hello everyone! I've encountered a small problem with one of our "special" assignments. Question: The normal boiling point for ethyl alcohol is 78.4 C, S for C2H5OH(g) is 282,7 J/mol*K. At what temperature is the vapor pressure of ethyl alcohol 357 mm Hg? Maybe I'm stupid, but I can't find...

I just finished a lab where I distilled a mixture of 2-methyl-2-butene and 2-methyl-1-butene in a dilute solution of sulfuric acid. The boiling points of the compounds respectively are 38.57C and 31.6C. The bp range ended up being a constant 32C. How is this possible? Shouldn't it be...

Homework Statement A 3.00 X 10^2 W electric immersion heater is used to heat a cup of water. The cup is made up of glass and its mass is 3.00 X10^2 g. It has 250 g of water at 15 degrees celsius. How much time is needed to bring water to boiling point. Assume no heat is lost and temp of cup is...

[SOLVED] boiling point Homework Statement All of my sources say that a liquid boils when its saturated vapor pressure reaches the external pressure on the liquid. None of my sources actually explain why that makes sense. When they say "external pressure," does that include the vapor pressure...

[SOLVED] What affect does altitude have on boiling point? What affect does altitude have on boiling point?

Homework Statement Calculate the boiling point (in degrees C) of a solution made by dissolving 7.49 g of urea {CO(NH2)2} in 28.0 g of water. The Kbp of the solvent is 0.512 K/m and the normal boiling point is 373 KHomework Equations Delta Tf = (i)(m)(Kbp)The Attempt at a Solution Kbp= 0.512...

If one has a mixture of borneol (standard bp: 210 C) and verbenone (standard bp: 227.5 C), would the mixture's boiling point theoretically be the average of the two (218.75 C), or is there something else I have to take into consideration (vapor pressure)? Thanks.

Hi, I've been wonderring what happens to a substance once boiling point is reached, in particular the rate of evaporation. Am I right in thinking that further energy will cause the rate of evaporation to increase, while temperature of substance remains constant? Is there a point where if...

why does water evaporate even below its boiling point? is it because the bonds between particles aren't strong (while particles in water moves) thus some escape periodically or does it have something to do with convection currents?

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...

More emphasis... I understnad that atompsheric pressure affects boiling point and that as atmospheric pressure increases, boiling point increases...but why?

Me and a colleague are looking (Just for the fun of it) for the material which has the highest boiling point. Our evaporater, which we use to boil palladium, claims that since it can boil Wolfram/Tungsten, it can evaporate anything. Material physics like this is not my strong suit, but surely...

the surface tension of a liqud at its boiling point is what?

In the attachment, i think the answer is c). However c) has the same molecular weight as d) and they are both alcohols. Is it that c) is not symmetrical, thus more polar as compared to d) and which is why c) should have a higher boiling point due to the stronger intermolecular forces?

I think the answer is e). I don't think it is ammonia because of the hydrogen bonding between nitrogen and hydrogen. This will result in a higher boiling point. This is the same with Hydrogen fluoride and water. However, the two organic molecules I'm not sure. I assume that since the alcohol is...

I'have searched a lot but could not find boiling point for steel. Can you tell me what's the boiling point of steel? Also any link for a table which provides both melting and boiling points for commonly used metals would be greatly appreciated. Here is what I found so far: Melting Point: The...

i know that pure liquids boil at a termperature of 100 degress but what is the difference between evaporation and boiling

Here's the question: What is the boiling point of a solution that contains 1.25 mol CaCl_2 in 1400g of water? Now, I know that I have to take into account the fact that CaCl_2 disassociates in water to form ions. I thought the effective molality here would be 3 * 1.75 m since there are...

Thermodynamics?? Boiling point of NH3 I hope I'm in the right place here, I'm no scientist, just a guy with a question. How can I find out the boiling point of ammonia at various pressures. :confused: I am dealing with an ammonia refrigeration system and trying to figure out where the ammonia...

this is going to sound like an odd question, but which element has its boiling point and its freezing point closest together? by which i mean, which transitions through the phases the fastest?

Boiling point, urgent ! Which of the following has higher boiling point? 1) Mixture of hexane and propanone 2) propapone (consider their relative molecular mass and the forces of attraction between the molecules) I think the mixture of hexane and propanone has a higher boiling point, as...