What is the average kinetic energy of H2?
(b) What is the average kinetic energy of the H2(g) molecules? The average kinetic energy of the H2(g) molecules is 6.2 × 10−21 J because both gases are at the same temperature.
Do all molecules have the same kinetic energy?
Not all molecules will have the same kinetic energy and hence the same speed. An increase in temperature increases the average speed of the molecules and the range of speeds. The average kinetic energy of oxygen molecules and hydrogen molecules will be the same at any particular temperature.
Is oxygen or nitrogen faster?
O2 “permeates” approximately 3-4 times faster than does N2 through a typical rubber, as is used in tires, primarily because O2 has a slightly smaller effective molecular size than does N2.
Can we separate O2 from CO2?
Splitting carbon dioxide (CO2) into carbon and oxygen can in fact be accomplished, but there is a catch: doing so requires energy. If hydrocarbon fuels, which produce the greenhouse gas in the first place, supply that energy, thermodynamics tells us that the net result will be more CO2 than you started with.
Does CO2 diffuse slower than O2?
When gases are diffusing through liquids, for example across the alveolar membrane and into capillary blood, the solubility of the gases is important. The more soluble a gas is, the faster it will diffuse. Carbon dioxide is inherently more soluble than oxygen, and thus diffuses much faster than oxygen into liquid.
What role do porins play in diffusion?
Porins are types of proteins which form pores of large sizes in the outer membranes of plastids such as chloroplast, mitochondria and the membranes in bacteria. They help in facilitating the passive transport of small-sized protein molecules.
Where are porins found?
Porins are channels with wide, water-filled pores found in the outer membranes of gram-negative bacteria and mitochondria. The subunits are composed of an antiparallel barrel of 16 or 18 β-strands that cross the membrane (see Fig.
What is difference between porins and aquaporins?
Porins are proteins that act as a pore through which molecules pass through cellular membrane. Aquaporins are protein molecules embedded in the cell membrane which allows the flow of water molecules. These are found in the cell membrane of plant and animal cells.
Where are Porins are present?
They are found in the outer membrane of gram-negative bacteria and some gram-positive mycobacteria (mycolic acid-containing actinomycetes), the outer membrane of mitochondria and the outer membrane of chloroplast.
Are porins channel proteins?
Porins are beta barrel proteins that cross a cellular membrane and act as a pore, through which molecules can diffuse. Unlike other membrane transport proteins, porins are large enough to allow passive diffusion, i.e., they act as channels that are specific to different types of molecules.
Are porins always open?
The bacterial outer membrane protein OmpF exhibits a β-barrel fold with short loops on the periplasmic and extended loops at the extracellular surface. Conductance measurements have shown that porin OmpF trimers exist in either open or closed states, depending on the transmembrane potential.
Which part of mitochondria has almost 70 75 protein content?
Which part of mitochondria has almost 70-75% protein content? Explanation: The outer membrane of mitochondria is composed of approximately 50% lipid by weight and contains a mixture of different enzymes. The inner membrane contains more than 100 different polypeptides and has a very high protein to lipid ratio.