Boiling Definition and 320 Threads

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...

does anyone know why it is important to have the melting point of a solute not be higher than the boiling point of the solvent during recrystallization? --having a little trouble rationalizing this.

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 just bought a saucepan on sale (40% off closeout sale) to use for making tea.. but I just boiled water in it and now it smells like melted plastic in here :bugeye: could it be I bought a pan that cannot be used on a gas stove? I'm puzzled :rolleyes:

If I were to put about 80 g of lead into 80 g of water boiling at 100 degrees, after about 5 minutes, would the lead attain approximately 100 degrees or would it be significanty less?

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

Catalysts I have to state if the "assertion" is true or false and as well the "Reason" if it is true or false. However, i also have to note if the reason is the correct explanation of the "assertion" The "assertion": #1. Decreasing the atmospheric pressure on a pot of boiling water causes...

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...

hi! I wanted to know the answer for this question: Where is the energy going when the water is boiling? We are talking about thermal energy in my class. Also, If I would place a beaker of water on a hot plate in order for it to get hot and change temperature, Would the hot plate transfer energy...

Boiling/ Melting... I take it everyone knows the graph of temperature when you heat ice / water - with the flat bits when it melts and boils. My question is why is this the case? Obviously the heat energy you are putting in is going to kinetic energy of the particles when the graph is not flat...

I just now heated a cup of coffee in a microwave oven for 2 minutes. When I opened the oven door to get the cup, the surface of the coffee was placid. But the moment I picked up the cup and moved it, there was a brief moment of boiling lasting maybe one second. What might have caused the...

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...

How do i find out which substance has a higher boiling point. Which substance has the higher boiling point? Explain. a.) LiCl or HCl b.) NH3 or PH3 c.) Xe or I2 I also have a question on vaporization Which forces oppose vaporization of each substance? a.) hexane b.) water c.) SiCl4

Determine the change in internal energy of 1 kg of water at 100 degrees C when it is fully boiled. Once boiled this volume of water changes to 1671 Liters of steam at 100 degrees C Assume the pressure remains constantat 1 atm things i know 1 L =1E-3 m3 1atm = 1.013E5 N/m2 1 L = 1000 cm3 =...

Me again... Is it possible to find th etemperature of the steam if the water boils at 96 degrees Celsius? How? Another one, the boiling temperature of a liquid vaires with atmospheric pressure. Does the heat of vaporization vary with the boiling temperature of a liquid? Can someone...

Hi all, there's so many forums here, I really don't know if this is the right one. However... Today, I cooked some noodles. The water was boiling low, just simmering. I had a taste, and decided the noodles needed more salt. So I added some salt. And, can you believe, where I put in the...

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...