Learn more about our help with Assignments: Physical Chemistry
Search & Filtering
Physical Chemistry
what is marginal line in atom?
Physical Chemistry
why potential energy of electron is in minus?
Physical Chemistry
what is stopping potential?
Physical Chemistry
a beaker of water gives a reading of 125.5g on an electronic balance.A metal weight hanging from a string is suspended in water and the mass reading is 141.2g. The reading jump up to 214.8g after the metal weight falls to the bottom of the beaker. Calculate the density of the metal weight. (density of water = 0.977 g/mL)
Physical Chemistry
how do i calculate (estimate) the initial molar flow of propylene and benzene in order to produce 90 000 tonne/year of isopropyle benzene (gas phase). the following reaction are involved:
(1) (A)C3H6 +(B)C6H6------>(D)C9H12_________desired reaction.
(2) (E)C3H6 +(D)C9H12----->(G)C12H8 (p-diisopropyl benzene ,DIPB)_______undesired reaction.
r1=K1(T)[A][B]_______where T=temperature (k)
r2=K2(T)[E][D]
propylene is from a gas mixture(0,99 of propylene ) at 25C,1 bar
benzene is from a gas mixture(0,95 of benzene ) at 25C,11.7 bar
(1) (A)C3H6 +(B)C6H6------>(D)C9H12_________desired reaction.
(2) (E)C3H6 +(D)C9H12----->(G)C12H8 (p-diisopropyl benzene ,DIPB)_______undesired reaction.
r1=K1(T)[A][B]_______where T=temperature (k)
r2=K2(T)[E][D]
propylene is from a gas mixture(0,99 of propylene ) at 25C,1 bar
benzene is from a gas mixture(0,95 of benzene ) at 25C,11.7 bar
Physical Chemistry
why is work(w=pex*deltaV) negative ?
Physical Chemistry
I am making a liquid lens for a digital slr camera, where voltage being applied to the liquid lens, changes the focal length of the lens.
My design is that a stainless steel tubing will be in between two glass lens. Inside the tube, at the bottom will be water, which is electrically conductive, which is covered by mineral oil, which is non conductive.
The oil will sit on top of the water and the interior of the tubing is covered with teflon tape, which is hydrophobic, meaning the water molecules will arrange itself to make at least contact with the tape as possible, and the shape that is mostly made is a water droplet, so the water here will have a miniscus.
This is when the lens is upright, meaning its lying on its glass lens. If I change the orientation of the lens, so its parallel to the ground to fit on a camera, will the oil and teflon tape keep the water and oil in the same position or will the water and oil shift around in the tubing? This is for my senior capstone project.
My design is that a stainless steel tubing will be in between two glass lens. Inside the tube, at the bottom will be water, which is electrically conductive, which is covered by mineral oil, which is non conductive.
The oil will sit on top of the water and the interior of the tubing is covered with teflon tape, which is hydrophobic, meaning the water molecules will arrange itself to make at least contact with the tape as possible, and the shape that is mostly made is a water droplet, so the water here will have a miniscus.
This is when the lens is upright, meaning its lying on its glass lens. If I change the orientation of the lens, so its parallel to the ground to fit on a camera, will the oil and teflon tape keep the water and oil in the same position or will the water and oil shift around in the tubing? This is for my senior capstone project.
Physical Chemistry
I am quite confused because I was taught in Grade 10 that a NM and a M is ionic, but this year, in Grade 11, my teacher said that a NM and M bonding together can be covalent. Whenever I look at the bond polarity of Potasssium Iodide, Copper II Chloride and Sodium Nitrate, it tells me that the bond is polar. Are these compounds ionic or covalent? Which method should I use? Thank you!
Physical Chemistry
How much work is done by the system when
2.00 moles of O2 expand from a volume of
3.00 liters to a volume of 5.6 liters against a
constant external pressure of 0.0100 atm?
Answer in units of J
2.00 moles of O2 expand from a volume of
3.00 liters to a volume of 5.6 liters against a
constant external pressure of 0.0100 atm?
Answer in units of J
Physical Chemistry
What ratio of vinegar and baking soda produces the strongest carbon dioxide?
