This is literally the exact assignment I have in my chem class and I was having some trouble understanding what's going on, your video really helped! Thank you!

I am still amazed that the temp of Octanol *rose.*

Thank you so much 👍

Here are the times i got: 2:05 2:41 4:22 7:27

Wow that was a really easy and fun experiment to simply learn the effect temperature has on solubility of solutes. Thanks<3

CEN YOU DO 5TH GRADE

This ZnCl2 will be very impure, the hydrated form undergoes extensive hydrolysis under heating to form zinc oxychloride

The 2nd last is called propoxy propane as well ??

This would be the cell salt zinc chloride how to make your own cell salt to treat efficiencies schessler 27 cell salts Google it go to that site and learn about the cell salts that we use sublingually deficiencies make it yourself this way

good video with solid explanations, too bad the audio quality is dated, but other wise fantastic.

Can you breath the oxygen ? Underwater breathing apparatus! If you could lol😊

aye what up 12CHEM3 🧑🏿‍🎤

Thanks from Germany.

This was an absolutely magnificent and propitious exhibition of intermolecular forces. I sincerely express my gratitude. (Sorry for bad English)

The brown product is manganese dioxide.

Hi, I'm a high school student that wants to do an similar investigation on the rate of oxidation of ethanol using potassium dichromate and HCl, shown in this video. I found the experiment very insightful, and I have some questions about the experimental procedure you demonstrated. In your video, you performed titrations after collecting samples at specific time intervals to analyze the reduction of dichromate ions. Unfortunately, I do not have the ability to carry out titrations in my setting. I do have access to a UV/Vis spectrometer and I am considering using it to directly measure the absorbance of the samples over time. I would like to ask: 1. Can the UV/Vis spectrometer be used to directly measure the changes in absorbance of the reaction mixture without performing titrations? Can I just directly measure the absorbance of each sample being extracted at specific time intervals? If so, at which wavelength would you recommend taking the measurements? 2. Do you foresee any potential issues or limitations with using direct spectrophotometric analysis for determining the rate of the reaction in this case? 3. If direct measurement is viable, could you suggest any specific tips or considerations for conducting the analysis to ensure accurate and reliable results? Thank you for reading this, and it can really help! I would greatly appreciate any advice or insights you could provide based on your experience. Understanding the viability of direct spectrophotometric analysis would be extremely valuable for the success of my project.

Imagine you have added too much water (more than amount of sand) how would you then be able to measure the volume of air?

Very thanks to you good sir for helping me with my assignment

Btw thx

Underrated

W video

Really helpful

thank you so much your voice is so soothing btw

This is a great video, especially for students who missed the lab. Is there any way to share the worksheet that goes along with this particular lab? The numbers I have for my vernier lab are different.

Sir pls where I can get this procedure

Some good stuff! (sorry for bad English)

Nice

كيا برا امتحان علوم كويت اومدن

Well calculated medicinal chemistry so sweet

extremely helpful. you went through several of various problems.

Thank you❤

very educational

Is this a standarized method?

Hi! I’m currently studying chem and from what I read online, heat of neutralization reactions are exothermic right? This means that the change in heat should be negative. Which means that the temperature should drop. Why is it that your temperature increased?

I have 1 quibble. Otherwise I think this video is great. I think you've switched the input and output variables when you set up the graph at about the 2:00 mark. On your A vs B graph, B is clearly the input/independent variable. Whereas in the preceding description of a Direct Relationship (1.35), I think you've used B as the output/dependent variable. Am I confused? This gets my students all the time, but perhaps I'm teaching it wrong?

You know I was looking for Jump Master Nomenclature for the T-11 parachute. But this is also Nomenclature.

thank you so much this video was the one that finally made this topic click for me. SO HELPFUL.

Hi Mike! I teach Chemistry in the States and wonder if you have handouts written for your Virtual Lab Videos. I already adapted a lab write up for the copper chloride hydrate one, but I thought I would ask if you have write ups available for free or purchase before I reinvent the wheel.

Your not really explaining anything

ive been struggling with this. thanks for covering this topic! ^^

Ez

it is over. the west has fallen. millions must determine percent copper in brass

I tried this and found that the zinc chloride can indeed melt (b.p. = 290 C) and further decompose, as the substance went yellow and then black with further heating. I'm impressed that you were able to obtain the colourless product without this happening, as I found it quite difficult to avoid heating it to the point of decomposition.

What kind of nerd is this?

Interesting video 👍👍

What a lecture thanks

Why would I get red color when I mix the two solutions?

You should probably wear gloves when you do that.

Experiment 1: 0:06 Experiment 2: 2:58 Experiment 3: 4:31 Experiment 4: 7:16 Experiment 5: 10:02 Experiment 6: 12:05 Experiment 7: 13:46 Experiment 8: 15:36 Experiment 9: 17:48 Experiment 10: 22:25 Experiment 11: 26:49 Experiment 12: 28:31 Experiment 13: 32:39 Experiment 14: 35:38 Experiment 15: 39:28

Thank you so much, this was so easy to follow along! 😊