In my textbook they claim that:
They lost me when they said "thermodynamic state". Do they mean thermodynamic system? I know that a system such as a container of gas will have a very large number of microstates considering the amount of gas molecules present and that statistical methods would...
From what I've read all processes of a thermodynamic system are irreversible because some energy will be lost to the surroundings but I don't understand why that can't be reversed by getting the surroundings to put that energy back into the system. Let's say I have a gas canister with a piston...
These lab coats are 65% polyester, 35% cotton. Is polyester any more resistant to acids than cotton?
I've felt the burns 5% H2O2 solutions cause from sterilising cuts with the stuff so I'm not surprised that that stuff can eat through fabric that rapidly. H2O2 fascinates me.
I got some concentrated H2SO4 on my lab coat on monday and when I left the lab there was only a brown stain on the lab coat so I put it in my locker. The next day I noticed an acid burn on my t-shirt, obviously caused by some acid that seeped through the lab coat. I can't walk into the lab next...
I watched a video there about cathode ray tubes and the guy in the video demonstrated the negative pole of a magnet deflecting the beam and the positive pole attracting the beam. I know that moving electrical charges create magnetic fields but I didn't know their magnetic fields always deflect...
When a molecule, let's say butane is placed in an external magnetic field and its hydrogens align parallel or antiparallel to the direction of the magnetic field, do 50% of the H atoms align parallel to the B field and the other 50% align antiparallel or what? If so, when they radio waves are...
Good point, I often spend loads of time learning extra curricular topics and when I do the test I don't do that well because it doesn't include half the stuff I learned. Maybe its best to concentrate on what the course covers.
There no such thing as wasting time when you're learning chemistry. I learn concepts so that I know them forever, not to pass my chemistry course. Besides a lot of the extra currular stuff I learn helps me understand the stuff I do in college better. Takes revision and putting the theory into...
I'm reading the book (Organic Chemistry by John McMurray) for my organic chemistry class at the moment and when I looked at the past exam papers and course structure I noticed it doesn't cover a lot of what I've read so far. My course only seems to cover a handful of chapters in the book. Its a...
Can it be done? I tried stacking cells made with 1€ coins + 50c coins separated by some tissue soaked in sea salt but didn't measure any voltage with the multimeter.
The problem is every coin except the brown ones consist mainly of copper and the brown ones are steel plated with copper. Heres...
Acut: I added NaOH but no color change at all.
minerva: Solutions with no AgCl turn amber.
Oxidation to Ag2O is the best theory so far IMO. I did read that silver nano particles absorb some wavelengths of light and the result is an amber color though so I wonder if the cations could be...