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Wayne Breslyn
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Добавлен 4 июн 2008
Dr. B is chemist and learning scientist who enjoys creating videos to help students with chemistry and other science topics. He has taught science for over twenty years in the U.S. and internationally. He holds a Ph.D. in Curriculum & Instruction from the University of Maryland where he works on research projects investigating how people learn science.
To become a channel member:
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Read his recent research article in the Royal Society of Chemistry’s Chem. Educ. Res. & Practice journal at pubs.rsc.org/en/content/articlehtml/2020/rp/c9rp00145j .
You can find more help with chemistry at www.Breslyn.org .
To become a channel member:
ruclips.net/channel/UCaUF73YX-uQTGwDB20I3n3gjoin
Read his recent research article in the Royal Society of Chemistry’s Chem. Educ. Res. & Practice journal at pubs.rsc.org/en/content/articlehtml/2020/rp/c9rp00145j .
You can find more help with chemistry at www.Breslyn.org .
Convert 4.0 L to mL (4 Liters to Milliliters)
To convert 4 liters (L) to milliliters (mL), you can use the following steps. Note that the L will cancel out as you perform the conversion, leaving only mL:
Conversion Factor:
1 liter (L) = 1000 milliliters (mL)
Start with the quantity you want to convert (4 L) and set up a ratio where the original unit (L) is in the denominator and the target unit (mL) is in the numerator, using the conversion factor:
Conversion factor: 1000 mL / 1 L
Write the quantity you want to convert (4 L) as a fraction over 1: 4 L / 1
Multiply this fraction by the conversion factor: (4 L / 1) * (1000 mL / 1 L)
Notice that the units of liters (L) in the numerator and denominator cancel out, leaving only the units of milli...
Conversion Factor:
1 liter (L) = 1000 milliliters (mL)
Start with the quantity you want to convert (4 L) and set up a ratio where the original unit (L) is in the denominator and the target unit (mL) is in the numerator, using the conversion factor:
Conversion factor: 1000 mL / 1 L
Write the quantity you want to convert (4 L) as a fraction over 1: 4 L / 1
Multiply this fraction by the conversion factor: (4 L / 1) * (1000 mL / 1 L)
Notice that the units of liters (L) in the numerator and denominator cancel out, leaving only the units of milli...
Просмотров: 139
Видео
Write the Molecular, Structural, and Skeletal Formula for Butanone (Methyl Ethyl Ketone)
Просмотров 62День назад
In this video, we'll learn how to draw the molecular, structural, and skeletal formulas for butanone, also known as Butan-2-one or methyl ethyl ketone (MEK), which has the molecular formula CH₃COCH₂CH₃. Starting with the molecular formula, CH₃COCH₂CH₃, we see the number of Carbon, Hydrogen, and Oxygen atoms, as well as the presence of a carbonyl group (C=O), which is characteristic of ketones. ...
H2, N2, and NH3 : Comparing Boiling Points
Просмотров 96614 дней назад
NH₃ has the highest boiling point because it experiences stronger hydrogen bonding compared to the weaker London dispersion forces in H₂ and N₂. Comparing N2 and H2, the greater molar mass of N2 means it will have a higher boiling point than H2. Here are the boiling points for each substance: H2 boils at -252.8C N2 boils at -195.8C NH3 boils at -33.1C Join this channel to get full access to Dr....
Write the Molecular, Structural, and Skeletal Formula for Propene (C₃H₆)
Просмотров 18414 дней назад
In this video, we'll learn how to draw the molecular, structural, and skeletal formulas for Propene (C₃H₆). Starting with the molecular formula, C₃H₆, we see the number of Carbon and Hydrogen atoms, but it doesn't reveal their arrangement. However, this formula is crucial as it indicates that Propene is an unsaturated hydrocarbon, meaning it contains a carbon-carbon double bond. Next, we'll dra...
Write the Molecular, Structural, and Skeletal Formula for Butanol (C₄H₉OH)
Просмотров 10114 дней назад
In this video, we'll learn how to draw the molecular, structural, and skeletal formulas for Butanol, also known as Butan-1-ol, which has the molecular formula C₄H₉OH. Starting with the molecular formula, C₄H₉OH, we see the number of Carbon, Hydrogen, and Oxygen atoms, as well as the presence of a hydroxyl group (OH), which is characteristic of alcohols. However, the molecular formula alone does...
Write the Molecular, Structural, and Skeletal Formula for 2-Methylpentane
Просмотров 9814 дней назад
In this video, we'll learn how to draw the molecular, structural, and skeletal formulas for 2-methylpentane (C₆H₁₄). Starting with the molecular formula, C₆H₁₄, we see the number of Carbon and Hydrogen atoms, but it doesn't reveal their arrangement. However, this formula is crucial as it indicates that 2-methylpentane is an isomer of hexane, meaning it shares the same molecular formula but has ...
Write the Molecular, Structural, and Skeletal Formula for Dimethylamine (C₂H₇N)
Просмотров 7314 дней назад
In this video, we'll learn how to draw the molecular, structural, and skeletal formulas for Dimethylamine (C₂H₇N). Starting with the molecular formula, C₂H₇N, we see the number of Carbon, Hydrogen, and Nitrogen atoms, but it doesn't reveal their arrangement. However, this formula, along with the name "Dimethylamine," suggests it is a secondary amine, meaning the nitrogen atom is connected to tw...
Molecular Formula vs Structural Formula vs Skeletal Formula
Просмотров 1,4 тыс.Месяц назад
This video provides a detailed overview of three primary types of chemical formulas: molecular formulas, structural formulas, and skeletal formulas. More organic chemistry help at www.Breslyn.org ! We'll start with molecular formulas, which simply list the types and numbers of atoms in a molecule, offering no structural insights. Then we’ll look at structural formulas, which build on molecular ...
Convert 5.0 L to mL (5 Liters to Milliliters)
Просмотров 264Месяц назад
To convert 5 liters (L) to milliliters (mL), you can use the following steps. Note that the L will cancel out as you perform the conversion, leaving only mL: Conversion Factor: 1 liter (L) = 1000 milliliters (mL) Start with the quantity you want to convert (5 L) and set up a ratio where the original unit (L) is in the denominator and the target unit (mL) is in the numerator, using the conversio...
Convert 1.25 L to mL (1.25 Liters to Milliliters)
Просмотров 184Месяц назад
To convert 1.25 liters (L) to milliliters (mL), you can use the following steps. Note that the L will cancel out as you perform the conversion, leaving only mL: Conversion Factor: 1 liter (L) = 1000 milliliters (mL) Start with the quantity you want to convert (1.25 L) and set up a ratio where the original unit (L) is in the denominator and the target unit (mL) is in the numerator, using the con...
Convert 650mmHg to atm.
Просмотров 191Месяц назад
To convert 650 millimeters of mercury (mmHg) to atmospheres (atm), you can use the conversion factor: 1 atmosphere (atm) is equal to 760 mmHg. The conversion formula is: Pressure in atmospheres (atm) = Pressure in millimeters of mercury (mmHg) / 760 For your specific example: Pressure in atmospheres = 650 mmHg / 760 Calculating this: Pressure in atmospheres is approximately 0.855 atm So, 650 mm...
Write the Molecular, Structural, and Skeletal Formula for Cyclohexane (C₆H₁₂)
Просмотров 304Месяц назад
In this video, we'll learn how to draw the molecular, structural, and skeletal formulas for cyclohexane (C₆H₁₂). Starting with the molecular formula, C₆H₁₂, we see the number of Carbon and Hydrogen atoms, but it doesn't reveal their arrangement. However, this formula is important as it indicates a cyclic structure due to the reduced number of hydrogens compared to a straight-chain alkane. Next,...
Write the Molecular, Structural, and Skeletal Formula for Butane (C₄H₁₀)
Просмотров 181Месяц назад
In this video, we'll learn how to draw the molecular, structural, and skeletal formulas for Butane, a simple hydrocarbon with the molecular formula C₄H₁₀. Starting with the molecular formula, C₄H₁₀, we see the number of Carbon and Hydrogen atoms, but it doesn't reveal their arrangement. However, this formula tells us that butane is an alkane, a type of hydrocarbon with only single bonds between...
Predict the Products of the Reaction for C6H12O6 + O2 (Glucose + Oxygen Gas)
Просмотров 379Месяц назад
To predict the products of the chemical reaction between C6H12O6 (Glucose) and O2 (Oxygen), it's essential to identify the type of reaction occurring. Predicting the Products of Chemical Reactions: ruclips.net/video/TeXWuTMLe9M/видео.html Types of Reactions: ruclips.net/video/ddY2RQ3ziLo/видео.html Predicting Reactions Playlist: ruclips.net/p/PLZR1BGWBaZ1wjBsSmAMpWTEflHMUM8rhW&si=jO9JOea8ptXAmU...
Ideal Gas Law (PV=nRT) Practice Problem
Просмотров 189Месяц назад
In this video we’ll work a practice problem for the Ideal Gas Law, PV=nRT. For this problem you can rearrange the equation to get V by itself to start with or just plug in values and solve for V. Join this channel to get full access to Dr. B's chemistry guides: ruclips.net/channel/UCaUF73YX-uQTGwDB20I3n3gjoin Gas Laws Playlist: ruclips.net/p/PLZR1BGWBaZ1xHqcrmj3yKJ121-ZqozvIt&si=89_9L-yKwYCmW5Q...
Convert 0.25 L to mL (0.25 Liters to Milliliters)
Просмотров 251Месяц назад
Convert 0.25 L to mL (0.25 Liters to Milliliters)
Convert 0.75 L to mL (0.75 Liters to Milliliters)
Просмотров 236Месяц назад
Convert 0.75 L to mL (0.75 Liters to Milliliters)
Solving the Ideal Gas Law for Temperatures (T)
Просмотров 234Месяц назад
Solving the Ideal Gas Law for Temperatures (T)
Convert 0.1 L to mL (0.1 Liters to Milliliters)pen_spark
Просмотров 239Месяц назад
Convert 0.1 L to mL (0.1 Liters to Milliliters)pen_spark
Decompostion of Metal Oxides: Predicting Products
Просмотров 229Месяц назад
Decompostion of Metal Oxides: Predicting Products
How to Balance Ca(HCO3)2 + Ca(OH)2 = CaCO3 + H2O ()
Просмотров 1,1 тыс.Месяц назад
How to Balance Ca(HCO3)2 Ca(OH)2 = CaCO3 H2O ()
Atoms, Ions, and Molecules: Differences and Examples
Просмотров 445Месяц назад
Atoms, Ions, and Molecules: Differences and Examples
Predict the Products of the Reaction for Zn + HCl (Zinc + Hydrochloric acid)
Просмотров 561Месяц назад
Predict the Products of the Reaction for Zn HCl (Zinc Hydrochloric acid)
Electron Configurations Video Workbook: Explanation, Examples, & Practice
Просмотров 1,1 тыс.Месяц назад
Electron Configurations Video Workbook: Explanation, Examples, & Practice
The explanation is amazing thank you sooo much 👍🏻
I am watching this in the morning cause I have science exam today and there's only 1 hour left for my school bus to come to pick me up for school....
305 0
4:10 exception for d block, take 1 away from period number
shouldn't you change the 2 dots between O and N become a line?
Thank you so much ❤️
Now everything makes sense 🥲
But the Carbons are of different hybridisation! Since electro negativity is inversely proportional to p character, therefore sp2 is more electro negative than sp3 C of CH3 is sp3 but C of COOH is sp2, therefore electron pair should be pulled by the second C and give it +2 oxidation state, while the other C gets -2 oxidation state.
Iam from India it's going hard for me but it's easy from you thanks sir.
Thank you
Tysm ❤to be honest with you i wish u were my chemistry teacher 😢😂
I learnt nothing because at no point was there any discussion of WHY.
Thankuu❤❤❤❤❤
There are covalent bonds between N and H but whole compound is ionic yes
Kutte 🐶🐶🐶 Jyada English aa Rahi ha tujhe
Tnx
i dont get the actual drawing of the lewis structure you made, why are there 6 dots around the Carbon atom when it only has 4 valence electrons?
This was a lot easier than i was thinking....
What is the short electron configuration for Tellurium (Te)? (Use the the indicate exponents) (So [He]2s~2p° would be [He]2s^22p^6) ?! Can you help me with this?!
This should help: ruclips.net/video/rmu3kA6VS8c/видео.html
I have questions can you help me with it?
Does the structure help us understand that H3O has a positive charge?
thx its to much clear now
Its sad sir , seeing how your channel does not get more views like before
Thanks for noticing! It's strange, now when I publish videos they don't do much immediately, like they did before. But overall the number of views for my channel is doing fine. Covid was a crazy time for growth and it dropped down afterwards. At this point I'm about where I was at the height of covid. Still, not sure why videos don't do much initially!
I always find what I'm looking for on this channel
Is it bismusth?
It was really nice explaination
The best in the west.
You give best explanation tq sir
very helpful thanks god to bring this man to earth
🇮🇳
Chemistry 🧪⚗️
THANKS >>