of oxygen in the gas phase. When the fugacity of oxygen is approximated by its partial pressure (PO2) and the activity of oxygen in water by its concentration‚ [O2(aq)]‚ then Henry ’s Law can be expressed as: [pic] (3) KH approaches K in dilute solutions and for perfect gases. Henry ’s Law is generally a valid approximation for natural‚ fresh waters in equilibrium with the atmosphere. At constant temperature‚ oxygen partial pressure is given by the equation: [pic] (4) where VFO2
Premium Oxygen Water
The fluid mosaic model of the cell membrane. What is the fluid mosaic model? The fluid mosaic model is a model conceived by S.J. Singer and Garth Nicolson in 1972 to describe the structural features of biological membranes. The membrane is described to be fluid because of its hydrophobic integral components such as lipids and membrane proteins that move laterally or sideways throughout the membrane. That means the membrane is not solid‚ but more like a ’fluid’. The membrane is depicted as mosaic
Premium Protein Cell membrane Membrane biology
sulfuric acid H2S2O7 (l) + H2O (l) 2H2SO4 (l) ELECTROLYSIS of Sodium Chloride: Molten NaCl: Overall reaction: 2NaCl (l) 2Na (l) + Cl2 (g) Half-equations: 2Cl− (l) Cl2 (g) + 2e− Na+ (l) + e− Na (s) Concentrated NaCl: Half-equations: 2Cl− (aq) Cl2 (g) + 2e− 2H2O (l) + 2e− H2 (g) + 2OH− (aq) Dilute NaCl: Half-equations: 2H2O (l) O2 (g) + 4H+ (aq) + 4e− 2H2O (l) + 2e− H2 (g) + 2OH− (aq) Overall reaction: 2H2O (l) 2H2 (g) + O2 (g) Production of SODIUM HYDROXIDE: Mercury Cell: Electrolytic half-equations:
Premium Chlorine Sulfuric acid Sulfur
Fluids The amount of fluids in the body is extremely large. There are many different forms of fluid throughout the body‚ such as blood‚ urine‚ hormones‚ cerebral spinal fluid‚ water‚ albumin‚ and bile. The fluids that make up the body are required for homeostasis. There are many different functions of body fluids such as transporting nutrients‚ waste and gases‚ transforming food into energy and generate electrical activity to power body functions. Physiologic Fluid Compartments The major fluid
Premium Blood Kidney Cell membrane
Lister is one of the pioneers of Infection Control. Not only did he reduce the incidence of wound infection by the introduction of antiseptic surgery using carbolic acid‚ but also he was the first to apply Pasteur’s principles to humans. He showed that urine could be kept sterile after boiling in swan-necked flasks. He was the first person to isolate bacteria in pure culture using liquid cultures containing either Pasteur’s solution of
Premium Surgery Antiseptic Louis Pasteur
The first topic that was covered by this chapter was the excretion of wastes by the Renal system. The first step that occurs in the kidney deals with the nephron‚ which is the functional unit of the kidney. In the glomerulus the formation of urine begins with the passive filtration of plasma through the pores that are found in the glomerulus. The plasma is forced through these pores by hydrostatic pressure. The only things that determines if a molecule will pass through the pores of the glomerulus
Premium Kidney Metabolism Liver
-Interstitial Fluid -Intravascular Fluid -Transcellular Fluid -Filtration: movement of water and smaller molecules through a semipermeable membrane. it s promoted by hydrostatic pressure‚ lack of this will call edema and unable to concentrate urine -Diffusion: from a high concentration to a low concentration‚ example in the body is breathing -Osmosis: movement of only water through a semipermeable membrane across a concentration gradient -Active Transport: transport with the use of energy
Premium Blood
C hapter 2 IS MATTER AROUND US PURE How do we judge whether milk‚ ghee‚ butter‚ salt‚ spices‚ mineral water or juice that we buy from the market are pure? physical process of evaporation. However‚ sodium chloride is itself a substance and cannot be separated by physical process into its chemical constituents. Similarly‚ sugar is a substance because it contains only one kind of pure matter and its composition is the same throughout. Soft drink and soil are not single substances. Whatever the source
Premium Mixture Solution Chemical substance
Designation: D2972 – 08 Standard Test Methods for Arsenic in Water1 This standard is issued under the fixed designation D2972; the number immediately following the designation indicates the year of original adoption or‚ in the case of revision‚ the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval. 1. Scope 1.1 These test methods2 cover the photometric and atomic
Premium Analytical chemistry Reagent Hydrochloric acid
Despite the fact that water is something that has no taste‚ we still love it! Who doesn’t relish the feeling of a cool drink of water on a sweltering hot day? Approximately 70% of our body’s mass is made of water and according to a number of doctors‚ drinking a total of eight glasses of water a day fulfils the necessary requirement of this liquid our body demands. For a long time now‚ I have been searching regarding the benefits associated with water. Finally‚ after reviewing countless websites
Premium Water Blood Human body