Gaseous particles tend to undergo diffusion because they have kinetic energy. Diffusion is faster at higher temperatures because the gas molecules have greater kinetic energy. Graham’s Law states that the effusion rate of a gas is inversely proportional to the square root of the mass of its particles.

rate(gas A) × √molar mass(gas A) = rate(gas B) × √molar mass(gas B) This means that the relative rate of diffusion of two gases can be used to determine their relative molecular mass (or molar mass).

Three gases were used: hydrogen, oxygen, and difluorodichlormethane. The hydrogen went the fastest, the oxygen was in the middle, and the difluorodichloromethane had the slowest rate of effusion.

Chlorine

Several factors affect the rate of diffusion of a solute including the mass of the solute, the temperature of the environment, the solvent density, and the distance traveled.

gases

NH3

1 Answer. Simple diffusion, osmosis and facilitated diffusion.

The driving force for diffusion is the thermal motion of molecules. At temperatures above absolute zero, molecules are never at rest. Their kinetic energy means that they are always in motion, and when molecules collide with each other frequently, the direction of the motion becomes randomized.

Examples of diffusion in living organisms Oxygen and carbon dioxide, dissolved in water, are exchanged by diffusion in the lungs: oxygen moves down a concentration gradient from the air in the alveoli to the blood. carbon dioxide moves down a concentration gradient from the blood to the air in the alveoli.

Perfume is sprayed in one part of a room, yet soon it diffuses so that you can smell it everywhere. A drop of food coloring diffuses throughout the water in a glass so that, eventually, the entire glass will be colored. Water diffuses into cooking noodles, making them bigger and softer. …

The tubule of the nephron is surrounded by tiny blood vessels, called capillaries. By a process called diffusion, substances that your body can still use get reabsorbed. Excess material that is not reabsorbed remains in the tubule where it is swept away with wastes and other toxic Page 3 substances to form urine.

Kidneys. The kidneys remove waste products and help regulate the concentrations of ions and other small molecules. The tubule of the nephron is surrounded by capillaries that have a low concentration of useful molecules. Diffusion allows these molecules to reenter the bloodstream.

Diffusion is very important in the body for the movement of substances eg the movement of oxygen from the air into the blood and carbon dioxide out of the blood into the air in the lungs, or the movement of glucose from the blood to the cells. Cell membranes are partially permeable.

Active transport can be seen in the kidneys, at the reabsorption stage in the nephrons. Along the nephron, a large network of capillaries surround the tubules that carry the waste.

Secondary active transport uses the energy stored in these gradients to move other substances against their own gradients. As an example, let’s suppose we have a high concentration of sodium ions in the extracellular space (thanks to the hard work of the sodium-potassium pump).

Reabsorption takes place mainly in the proximal convoluted tubule of the nephron . Nearly all of the water, glucose, potassium, and amino acids lost during glomerular filtration reenter the blood from the renal tubules.

Sodium reabsorption occurs exclusively in proximal and distal convoluted tubules by tubular reabsorption. In the active reabsorption of sodium into the peritubular capillary network and passive flow of water flows, the proximal convoluted tubule is involved. 67 percent of sodium reabsorption accounts for it.