16 / 120 * 100% = 13.3% (w/w)
use the non aqueous titration dissolved urea in glacial acetic acid, and titrate with standard 0.1 mol/L trifluoromethanesulfonic acid in acetic acid using isobutyl vinyl ether as a thermometric endpoint indicator
No, an aqueous solution of urea does not conduct electricity because urea molecules do not dissociate into ions in water. Therefore, it is a non-electrolyte solution.
Urea is typically 45-46% nitrogen.
Oh, dude, that's an easy one. A mixture of urea and water is called a solution. It's like when you mix sugar in your coffee - it's all dissolved and blended together. So yeah, it's just a fancy way of saying urea and water hanging out together.
Yes. I mean you don't urinate any solids, do you? You may need to heat the water to dissolve urea at a high concentration. The dissolution of urea in water is endothermic (the hot water will cool as urea dissolves!)
The isotonic solution for Urea would be a solution that has the same osmotic pressure as a cell. This concentration would typically be around 0.15 M for Urea.
A one molal solution of urea contains one mole of urea dissolved in one kilogram of solvent (usually water), while a one molar solution contains one mole of urea dissolved in one liter of solution. Since the density of the solution can vary, a one molal solution typically has a lower concentration of urea in terms of volume compared to a one molar solution, making it more dilute. This is because the molarity takes into account the total volume of the solution, while molality focuses only on the mass of the solvent.
filtration
The structure that contains the lowest concentration of urea is typically the renal cortex of the kidney. In the nephron, as filtrate passes through the renal corpuscle and into the proximal convoluted tubule, a significant amount of urea is reabsorbed, leading to lower concentrations in these areas compared to the medulla and collecting ducts, where urea concentration increases due to water reabsorption.
Yes, urea is considered to be osmotically active. It can contribute to the osmotic pressure of a solution by attracting water molecules and affecting the overall concentration of solutes.
The proximal convoluted tubule of the nephron contains the highest concentration of glucose, as it is the primary site for glucose reabsorption from the filtrate back into the bloodstream. Conversely, the concentration of urea is higher in the distal convoluted tubule and collecting duct, as these segments are involved in the secretion and concentration of waste products, including urea. Thus, glucose is abundant in the proximal convoluted tubule, while urea is more concentrated in the latter parts of the nephron.
Urine is a solution of metabolic wastes that contains urea, salts, and many different organic compounds.
use the non aqueous titration dissolved urea in glacial acetic acid, and titrate with standard 0.1 mol/L trifluoromethanesulfonic acid in acetic acid using isobutyl vinyl ether as a thermometric endpoint indicator
The bladder, depending on the amount of water in your body. The kidneys filter urea and other waste products out of the blood and send them down the ureter to the bladder in the form of urine. Kidneys dont have the greatest concentration as the urea moves continuously through the loop of henle and into the bladder where it is collected.
Urea is isosmotic to the intracellular fluid of red blood cells, but because the membranes of the blood cells are permeable to urea. Urea enters the cell at a much more rapid rate than other permeable solutes (because of the steep concentration gradient) and the cell fills to it bursts.
true
the concentration of urea should be kept low in the dialysis fluid because urea is harmful for our body if it is not removed.