Best chemistry channel on KZread by far for concise explanations . Forget CGI , old school by a professional chemist and educator is best.

@OldSchoolChemistry

Жыл бұрын

Hey Barask, you are so kind. I appreciate your great support -thanks! I hope all is well in your neck of the woods.🙂

@baraskparas9559

Жыл бұрын

@@OldSchoolChemistry 9.57k onwards and upwards. I am currently using Bing creative commons images to illustrate the book.

@OldSchoolChemistry

Жыл бұрын

@@baraskparas9559 That is fantastic! Send me a link to the book when you are finished:) Way to go!

Thank you. This is all I needed to know in one video.

@OldSchoolChemistry

3 ай бұрын

HI Britney, I am so glad! Thank you for your comment:)

Wow just wow. Absolutely Great teaching

@OldSchoolChemistry

3 жыл бұрын

Hi Aywan, I’m so glad, thanks! If you haven’t already, please subscribe. I hope your class goes well😊

Plz plz keep it up mam never stop making vedios helps helps us very much a veiwer from india

@OldSchoolChemistry

2 жыл бұрын

Hi Shivam, thank you. I hope your class goes well. Please subscribe if you have not already!😊

Thank you. You are my newest best friend and you don't even know it. Your teaching is excellent.

@OldSchoolChemistry

8 ай бұрын

Hi Trohn, that makes me so happy...new friend;) Thanks!

THank you for your clear and very helpful videos!! :)

@OldSchoolChemistry

3 жыл бұрын

Hi Gaby, thanks for your kind feedback. You are welcome. I hope your class goes well!😊

i am also an educator, nice explanation and easy to learn

@OldSchoolChemistry

7 ай бұрын

Hi Louege, Thank you so much for that kind comment. Thank you also for your work with students! God bless you:)

Wow, I understand very much. Thank you

@OldSchoolChemistry

3 ай бұрын

Wonderful! That makes me so happy. Well done:)

I just subscribed love your explanation!

@OldSchoolChemistry

2 ай бұрын

Hi Islandgirlzzs, THANK YOU! I am so glad you liked the video:)

Thank you so much ma'am for making this video Really this is very helpful to me to understand.

@OldSchoolChemistry

3 жыл бұрын

Imaginative Images, I’m so glad this was helpful. I hope your class goes well!!😊

@kalivarapupavan6228

3 жыл бұрын

Ma'am can you make a video on this topic."Determination of available oxygen and manganese dioxide in pyrolusite ore by KMnO4". Because I can't a proper video no KZread

@OldSchoolChemistry

3 жыл бұрын

@@kalivarapupavan6228 Thank you for the recommendation. Good luck!

@OldScoolChemistry AMAZING... please explain why you are so straightforward with your explanation, but others beat around the bush like it's their job? just subscribed, keep this up!

@OldSchoolChemistry

10 ай бұрын

Hi Vincent, I am glad you find it straight forward! Thanks for subscribing:)

This world is not fair. 6.37K followers for this channel is unfair. It should have been something like 6.37M.

@OldSchoolChemistry

Жыл бұрын

Thank you chernetwoju6284!!💗

@chernetwoju4306

Жыл бұрын

@@OldSchoolChemistry, I thank you for your effort in making a contribution to knowledge that transforms humanity. As part of my PhD project, I was looking to identify an ester in some feed compound. I learned that it is possible to identify the presence of ester in organic samples through Ferric Hydroxamate Test. This test only shows the presence/absence of ester in your sample. It does not tell you the amount (concentration). That's where I came to know your channel. What if I measure the absorbance of my samples using a spectrophotometer and calculate the concentration of the available esters in my sample?

@OldSchoolChemistry

Жыл бұрын

@@chernetwoju4306 Wow! That sounds awesome. Creative idea to use spectrophotometry. I hope it works! Good job:)

Thank you 🙏🏻

@OldSchoolChemistry

Жыл бұрын

Hi Diki, thank you for your comment ❤️

thank you🌸

@OldSchoolChemistry

7 ай бұрын

Hi Silatopia, You are so welcome!! I hope you class goes well:)

in my work it asks for Wavelength and Absorbance can you explain what each means and how they connect with each other? Thank you

@OldSchoolChemistry

3 жыл бұрын

Hi p h, wavelength is the distance between of a crest and crest of one wave of light. Wavelength is specific to the color of your solution. Absorbance, in essence, is the amount of light absorbed by the solution. The spectrophotometer is set to a wavelength to detect the amount of light absorbed by a sample at that specific wavelength. I hope that helps!!

Once I have determined the conc. of the unknown sample using the curve, do I need to multiply it by the dilution factor ?

@OldSchoolChemistry

2 жыл бұрын

Hi Su zeO, no. This is because the concentration on the x axis was calculated considering the dilution factor. The concentration on the x axis should accurately represent the actual concentration put into the spectrophotometer machine. I hope that helps. Thanks!

is there other maybe more easy ways to calculate concentration of unknown?

@OldSchoolChemistry

2 жыл бұрын

Hi Mohamed, This is the only way with spectrophotometry. Remember once you have the plot you can simply use two points in the line to calculate concentration. You don’t actually have to find the equation of the line. I hope chemistry goes well for you. Please subscribe if you have not already. Thanks!😊

@mohamedmahmoudayoupe724

2 жыл бұрын

@@OldSchoolChemistry thanks for replying but I meant way other than spectrophotometer Something that can done in simple lap without many equipments Great video btw 😊

@OldSchoolChemistry

2 жыл бұрын

Possibly a gravimetric analysis with a precipitation reaction depending in the solute.

hey thanks

@OldSchoolChemistry

Жыл бұрын

Hi Vrushabh, your welcome:)