UCSB Science Line

Why does rubbing alcohol evaporate quicker than water? Question Date: 2015-04-26: Answer 1: Thank you for the question Rubbing alcohol consists mainly of ethanol or isopropanol Ethanol and isopropanol boil at a lower temperature than water which generally means that they will evaporate quicker than water The boiling temperature is largely

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The Boiling Point of Water at Various Altitudes

One of the most significant changes that occur in high altitude areas concerning cooking is the boiling point of water As the altitude increases the atmospheric pressure pushing down on water decreases which allows the water to boil at lower temperatures

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How to Make Marijuana Oil

My comprehensive online course Easy Cannabis Cooking for Home Cooks has a large module that includes detailed lessons and demonstrations on marijuana butter oil honey dairy products sugar and tinctures Odor Reducing Tips When Making Marijuana Oil Depending on how you make it creating marijuana oil can be quite fragrant

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Eighth grade Lesson Start with a Bang! Isopropyl Alcohol

First day of school demonstration - pour Isopropyl Alcohol (rubbing alcohol) into a 5 gallon water cooler bottle and ignite for a memorable start to the school year Plan your 15-minute lesson in Science or Science Skills with helpful tips from Sean Gillette

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ISOPROPYL ALCOHOL (90

Water spray dry chemical alcohol foam or carbon dioxide Water spray may be used to keep fire exposed containers cool dilute spills to nonflammable mixtures protect personnel attempting to stop leak and disperse vapors Special Information: In the event of a fire wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated

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Boiling Point of Isoprpoyl Alcohol Under a Vacuum?

25 12 2012Hello FC! I've lurked for a while and decided to join today since I've got a question I can't answer with my level of knowledge So I have a basic grasp of chemistry (emphasis on basic) but I'm having trouble calculating boiling points of isopropyl alcohol under a vacuum

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Why does alcohol boil before water?

14-3-2007The reason for the lower temperature has more to do with the amount of bonding in alcohol than in water Though both can form hydrogen bonds water forms more of them than alcohol does and thus is held to other molecules by more force requiring more energy to pull water molecules apart A few other factors are involved but this is the primary one

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Heat of vaporization of water and ethanol (video)

01 03 2016Heat of vaporization of water and ethanol The vast majority of energy needed to boil water comes right before it's at the boiling point It takes way less energy to heat water to 90C than to 100C so the relative amounts of energy required to boil ethanol vs water are actually as large as stated in the video It's not really intuitive but it's one of the odd things about water

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Alcohol Stoves

Isopropyl alcohol (rubbing alcohol) is an acceptable cooking fuel It may be purchased in 70 percent 91 percent and 99 percent strengths The higher the percentage of alcohol the better the alcohol will burn Isopropyl alcohol produces a yellow sooty flame and does not burn as cleanly as the above fuels

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Solvent Recycling and Azeotropes

Another common binary azeotrope found in solvent recycling is acetonitrile and water This is a common mixture used for HPLC analysis Acetonitrile boils at 81 6 C and water boils at 100 C The mixture forms an azeotrope which boils at 76 1 C and which is composed of 86% acetonitrile and 14% water

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Dangers to boiling to rubbing alcohol? [Archive

[Archive] Dangers to boiling to rubbing alcohol? General Questions The flashpoint of rubbing alcohol (70% isopropanol in water) is 25C (77F) so the vapor from boiling rubbing alcohol could catch fire (or even explode in a confined space

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Properties of Isopropyl Alcohol

Isopropyl alcohol or 2-propanol is sold as rubbing alcohol in many supermarkets and drugstores It belongs to a class of organic compounds called alcohols all of which are distinguished by an -OH group attached to their carbon chain Many of isopropyl alcohol's physical properties resemble those of other

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Why does alcohol boil before water?

14 03 2007The reason for the lower temperature has more to do with the amount of bonding in alcohol than in water Though both can form hydrogen bonds water forms more of them than alcohol does and thus is held to other molecules by more force requiring more energy to pull water molecules apart A few other factors are involved but this is the primary one

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can you boil rubbing alcohol out of water to drink

11 04 2013This Site Might Help You RE: can you boil rubbing alcohol out of water to drink? if you mix rubbing alcohol (91% or 99% isopropyl alcohol) and water then heat the water up enough to boil off the rubbing alcohol is it safe to drink? or does the alcohol leave behind any toxins that are water soluble?

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Boiling Point of Isoprpoyl Alcohol Under a Vacuum?

25 12 2012Hello FC! I've lurked for a while and decided to join today since I've got a question I can't answer with my level of knowledge So I have a basic grasp of chemistry (emphasis on basic) but I'm having trouble calculating boiling points of isopropyl alcohol under a vacuum

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Make Your Own Cannabis Concentrates Using Alcohol

What Do You Need to Make Cannabis Concentrates Using Alcohol Extraction? Really all you need if you're wanting to extract cannabis oil using alcohol is weed a few heat-safe glass dishes a strainer of some sort something to mix with a heating device and of course some quality high-proof grain alcohol

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Alcohol Evaporation

Alcohol Evaporation by Ted Cook Susan English Katie Lanier Abstract: The purpose of our experiment was to measure the rate of evaporation of anhydrous isopropyl alcohol The experiment involved measuring the amount of alcohol that evaporated from a glass funnel-shaped container every twelve hours

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Alcohol

Alcohol - Alcohol - Physical properties of alcohols: Most of the common alcohols are colourless liquids at room temperature Methyl alcohol ethyl alcohol and isopropyl alcohol are free-flowing liquids with fruity odours The higher alcohols—those containing 4 to 10 carbon atoms—are somewhat viscous or oily and they have heavier fruity odours

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Iso Purge

25 02 2018That quantities of ISO should evap quickly under an hour at the temp you mention you'll just have to keep an eye on it At a mild boil in a dbl boiler for an once of bud qwiso'd (never measured the amount of ISO used beyond eyeballing a level just over the saturated goods in the jar) takes approx 20-25 minutes to purge out yet remain just pliable enough to scrape up and

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