RIP my chances for getting into college. 💀💀💀💀 Cheers, Colin.

thankyou so much sir

Sodiu💛 Calciu🧡 Stronțiu❤️ Cupru💚 Potasiu💜 Litiu🩷

I got a 100: ---------------------------------------------------------------------------------------------------------------------------------------- What is density, and what two variables must you know to calculate density? (5pts) "Density is the ratio between mass and volume." ---------------------------------------------------------------------------------------------------------------------------------------- Density of Distilled Water (10pts) Mass of empty graduated cylinder (g): 25.38g Mass of distilled water and graduated cylinder (g): 33.99g Mass of distilled water (g): 8.61g Volume of distilled water (mL): 8.6mL Density of water (g/mL): 1.0g/mL Calculations: 33.99g-25.38g=8.61g 8.61/8.5≈1.0 ---------------------------------------------------------------------------------------------------------------------------------------- Density of Blue Saltwater (10pts) Mass of empty graduated cylinder (g): 25.38g Mass of blue saltwater and graduated cylinder(g): 35.26g Mass of blue saltwater: 9.88g Volume of blue saltwater (mL): 9.4mL Density of blue saltwater (g/mL): 1.05g/mL Calculations: 35.26-25.38=9.88 9.88/9.4=1.05106383≈1.05 ---------------------------------------------------------------------------------------------------------------------------------------- Mass of 6 glass beads (g): 18.59g Volume of graduated cylinder w/o beads (mL): 54m/L Volume of graduated cylinder w/glass beads (mL): 61m/L Volume of glass beads (mL): 7m/L Density of glass beads: 2.66 Calculations: 54-61=7 18.59/7=2.655714286≈2.66 ---------------------------------------------------------------------------------------------------------------------------------------- Mass of block of wood (g): 44.41g Length of block of wood (cm): 7.4cm Height of block of wood (cm): 3.7cm Width of block of wood (cm): 3.7cm Volume of block of wood (cm3): 101.30cm^3 Density of the wood block: 0.44 Calculations: 7.4*3.7*3.7=101.306≈101.30 44.41/101.30=0.4384007897≈0.44 ---------------------------------------------------------------------------------------------------------------------------------------- And you can just answer the post lab questions on your own- they are pretty straight forward. Here's the gist of the answers for the post labs: "subtract the initial volume of the water in the graduated cylinder from the volume after adding the beads" "Yes, density is an intrinsic property" "volume=length*width*height" ---------------------------------------------------------------------------------------------------------------------------------------- You're welcome. I encourage you guys to actually understand what's going on in the lab, and to just check your calculations here- not completely copy.

any LUOA this yr?

Nice

I was buy 99,9% clean KCl but the flame test show orange flame colore , its indicate to me NaCl. Am I right?! Is that any other way to determine KCl?!

Thanks :) It's great to hear someone pronounce ammonium thiocyanate.

Thank you! I was struggling!

What easily differentiate Li salt an Sr salt in the flame

I don't know who you are, I don't know where you are, but you're teaching me & I love it. Thank you for your likely unintentional, online chemistry course.

What's the difference between the color of barium ions and and copper (I) ions ????

Thanks. I would have loved to get a 360 view of the distiller so I could see the setup well.

What about Rhodium 9 either way to Kr or Xe, will it favour loss over gain?

You send me a message what is that second one you send me at tomorrow at 10:00 am

Like No2 😂

this video saved me for my new chem unit, thank you 😭

Thanks for explanation

When continuous long time boiling and evaporating causes continuous liquid decrease, what is a good way of continuous auto refill?

ماهي الماده التي اشتغلت عليها

I need to know why the bottom of the flask was warm after the crystallization.

Interesting helium still works better

came in clutch fr 💯

luoA?

Is it ink?

Is the chromate to dichromate reaction an exothermic or endothermic reaction?

Other than that the gas could have been ignited by static from the baloon it was a cool demonstration.😀

who else is also doing a lab assignment for school? lmao

It can kill braincells via asphyxiation. Same as helium. When you breath in hydrogen, it displaces air in lungs. You do not notice this, as your body still thinks lungs is full of gas. But this deprives your braincells of oxygen, and they start to die. That's why its so dangerous to do this.

This is an ancient video.

Wow, so many comments that prove 99% of people have no idea of what they are talking about. For All of you research the term "Hydrogen Inhalation Therapy" Then come back and post an informed comment.

Real

Looking like a flame 🔥

Don't do this at home ??? So why they give people this gas to inhale? For therapy and it reduces the inflammation

You talk like you're speaking to a child

wow, recently did this experiment in class and i had no idea what to look for. You definitely made me interested.

Godod

can you use ethanol for extracting nanoparticles

Can I inhale hydrogen gas What is side effects Can my lung blast😅

Seperation of two substances

You're such an amazing teacher my concepts are crystal clear. Thank you

You're such an amazing teacher my concepts are crystal clear. Thank you

Thank you so much sir!!

Nothing is vibrating the vocal chords faster. The vibrations are able to move faster though the medium of hydrogen than the nitrogen/oxygen mix of normal air.

you know your stuff dude. Thanks a bunch all these years later.

How to descale coil ? What acid should be used if needed? Plz guide

Now do that with a cig in your mouth I’m sure that will end very nicely

Can you distill ethanol next plesee?

when this video posted I was just 2 year old

Smanda bew