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Shawn Shields
United States
Приєднався 2 гру 2011
Introductory Chemistry and General Chemistry lectures covering concepts with example problems. These lectures are part of my online CHM 101, CHM 111 and CHM 112 courses at Germanna Community College in Fredericksburg, VA.
Use of Successive Approximations in Chemical Equilibrium Problem Example
This video demonstrates how to use the method of successive approximations in solving equilibrium problems (with an ICE Table)
Переглядів: 209
Відео
How to Write a Net Ionic Equation (Chemistry Example)
Переглядів 1319 місяців тому
Step-by-step example for how to write a net ionic equation. General Chemistry
How to Balance a Redox Reaction in Acidic Solution Example
Переглядів 539 місяців тому
Step by step discussion for how to balance a redox reaction in acidic solution. For General Chemistry
Kinetics: Method of Initial Rates Calculation Example
Переглядів 2862 роки тому
This problem shows you how to determine the rate law using initial rates data (given) and then calculate the rate constant for the reaction.
Example: Calculating pH for a Hydrolyzed Salt
Переглядів 1542 роки тому
This video shows you how to calculate the pH for a given salt solution, including how to determine which ion in the salt affects the pH.
Example- Calculate pH for a Weak Acid using an ICE Table
Переглядів 6 тис.2 роки тому
This is an example problem showing how to calculate the pH for a weak acid solution using an ICE Table.
Equilibrium Q and K Problem- Example Calculation
Переглядів 8202 роки тому
This video shows how to determine whether the reaction is currently at equilibrium by calculating Q. One can also determine which direction the reaction will shift to achieve equilibrium. After this, an example equilibrium calculation is demonstrated (with ICE table)
The Nernst Equation and Concentration Cells Plus Example
Переглядів 2552 роки тому
This is the fifth of five videos covering Chapter 17 (Electrochemistry) :)
Relationships between Free Energy, Equil Constant K, and Cell Potential deltaE Pt4
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This is the fourth of five videos covering Chapter 17 (Electrochemistry) :)
Standard Reduction Potentials Pt3
Переглядів 582 роки тому
This is the third of five videos covering Chapter 17 (Electrochemistry) :)
Electrochemistry Daniell Cell Example Pt2
Переглядів 1882 роки тому
This is the second of five videos covering Chapter 17 (Electrochemistry) :)
Introduction to Electrochemistry Pt1
Переглядів 512 роки тому
This is the first of five videos covering Chapter 17 (Electrochemistry) :)
CH15 Lecture Pt4 Predicting Solubility Example
Переглядів 512 роки тому
This is the fourth of four videos covering Chapter 15 (Solubility Equilibria) in the OpenStax textbook. :)
CH15 Lecture Pt3 Calculation Solubility Equilibrium Problem Example
Переглядів 512 роки тому
This is the third of four videos covering Chapter 15 (Solubility Equilibria) in the OpenStax textbook. :)
CH15 Lecture Pt2 Solubility Product Ksp Example Problem
Переглядів 522 роки тому
This is the second of four videos covering Chapter 15 (Solubility Equilibria) in the OpenStax textbook. :)
CH15 Lecture Pt1 Solubility Solubility Product Ksp
Переглядів 482 роки тому
CH15 Lecture Pt1 Solubility Solubility Product Ksp
Types of Radioactivity and Writing Nuclear Equations
Переглядів 6735 років тому
Types of Radioactivity and Writing Nuclear Equations
Radiation Units and Health Applications of Radioactivity
Переглядів 5295 років тому
Radiation Units and Health Applications of Radioactivity
Charles's Law (Concepts and Calculations)
Переглядів 5115 років тому
Charles's Law (Concepts and Calculations)
Boyle's Law (Concepts and Calculations)
Переглядів 1,8 тис.5 років тому
Boyle's Law (Concepts and Calculations)
Double Displacement and Precipitation Reactions
Переглядів 1,3 тис.5 років тому
Double Displacement and Precipitation Reactions
Thank you so much! This really helped me understand my homework
how do I find frequency with energy of photon?
PERFECT THANK YOU 😭
Thank you so much ..
Very helpful, thank you
A very clear and detailed explanation! :)
Thanks
THANK YOU
Excellent video
I think there is an misconception in the video. At 1:05, it is stated that if deltaG_0 is zero, the reaction is at equilibrium. This is wrong. The reaction is at equilibrium is the actual deltaG, which depends on the temperature, pressure and composition, is zero, as you correctly explain it later. By forcing actual deltaG=0, the equation deltaG_0=RTLnK is obtained.
Thanks for your comment, Angel. Rather than write a rather long explanation here about how deltaG is actually zero at equilibrium, it's best to go to another solid source. Here is a link to the Purdue Chemed site, and they have a great explanation of deltaG nought and deltaG in general. chemed.chem.purdue.edu/genchem/topicreview/bp/ch21/gibbs.php
What a beautiful colorfullness photons, Saleh Theory, for the first time, explain the relationship between different colors and different Gyroradius Helical motion of photon. see new difinition of colorfulness of photon video on saleh theory-com chanel.
for ln k. how can i find 'k'?
Ahhhhhh....... Thank you!It's my exam day after tomorrow. 💟💗
i've watched a bunch of videos and gone through countless tutorial websites but this video was by far the most helpful thing in understanding what on earth is really going on in these reactions. bless your soul.
thank you
Why is 2pz a sigma bond but 2Px and 2Py pi bonds? Can you also explain why sigma bond is higher in energy than the pi bond? Thank you :)
wow awesome
Thanks
Hi Ma'am can u plz solve this problem: 2.0 g of C6H6 was burnt in excess of O2 in a bomb calorimeter : C6H6( l ) + 7½O2(g) → 6CO2(g) + 3H2O( l ) If the temperature rise is 40°C and the heat capacity of the system is 2.0 kJ/K, calculate the enthalpy of combustion of C6H6 at constant volume and constant pressure. Answer. - 2.4414 kJ/mol; -24410.283 kJ/mol
So helpful; Thank You!! :-)
excellent video... thanks lot
Amazing how your explanation makes sense to me, my current chemistry teacher is from Taiwan, so let's just politely say there is a little language barrier. Thanks for the video!
thank you. i was looking for something to complement our chem book and this is a great explanation.
Great video. Well explained! Thank you.
Thanks, very helpful.👍🏾
excellent madam you explained
excellent madam you explained
thank you
I think there is an error at 3:26. ''If Q has a smaller value than K, it means the system has too many PRODUCTS''. Shouldn't it should be ''If Q < K,.....too many reactants''?
Very well explained I was so lost with my prof but you saved me!!! You've gained a subscriber
Thank you very much for such a great effort. It has been very useful source for me whenever I want to review basic kinetics. I would like to ask if the ppts you use in your kinetics videos are available for download.
Dr. Shields - excellent explanations and videos on Thermodynamics, thank you!
WHAT A GREAT VIDEO 10/10 THANK YOU SO MUCH!!!!
Why is the 2s of Nitrogen lower than the 2s of Carbon. Judging from the periodic table, electronegativity increases from left to right. And so, shouldn't Carbon be the lowest energy of 2s rather than Nitrogen?
When electronegativity is higher, then it is lower in energy which means nitrogen should be drawn lower than oxygen.
marana mass explanation mam........😍😍😇🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏👸
Interesting. I'm curious what mathematical phase transitions in combinatorial problems have to do with real phase transitions. Especially where some authors claim that the phase transition in water is 'discontinuous'.
Thanks for explaining the significant figures part as well. I remember in a science class I took I entered the numbers wrong (still correct math) because of the sig fig.
Thanks a lot! 😊
This is the first video that helped me understand- You are a star!! :)
thanks lady that was so helpful
Very helpful! Thank you so much!
Patrick Dean I didn't understand the first and second order ?
nerd
Thank you
god bless
Thanks, very helpful
Thank you, very helpful!
7:56 there shouldn't be ln (natural log) at the beginning of the RHS of the equation, only before the (16/1)
THANK YOU THANK YOU!!! I got it!
I guess one way to remember which element has lower energy is to think of electronegativity as an "energy measurement"; that is, high electronegativity = high negative energy = low energy. At least, I like to think of it that way, haha.