FiO2 stands for Fraction of Inspired Oxygen; it is a fraction of the amount of oxygen a patient is inhaling produced by an oxygen device such as a nasal cannula or mask. Different devices deliver different amounts of oxygen to the patient.Continue Reading
With a nasal cannula, it is assumed that the patient's oxygen intake increases 4 percent for every liter of oxygen that flows through the cannula.
Using a Venturi mask, which mixes air from the room with the oxygen, provides an accurate and constant FiO2 unlike the nasal cannula. It is often used when doctors are worried about carbon dioxide retention.
Steve Spangler's elephant toothpaste experiment demonstrates how potassium iodide can be used to catalyze hydrogen peroxide, creating water and oxygen. Food coloring and soap are added as visual aids. When the two liquids are mixed, the potassium ion reacts with the peroxide, liberating large amounts of oxygen. The soap traps this oxygen as bubbles, which boil out of the vessel like toothpaste squeezed energetically from a tube.Full Answer >
Sodium chloride, a common salt, dissolves in water due to the attraction between the negative part of the water (oxygen) and the positive part of the salt (sodium). Similarly, there is also an attraction between the positively charged part of water molecules (hydrogen) and the negative chloride atoms.Full Answer >
Calcium is a metallic element that burns when introduced to oxygen to form calcium oxide. The red and white flame burns intensely, resulting in a white powder.Full Answer >
A Bunsen burner is a type of device used for heating in a laboratory setting. This apparatus works by adjusting the size of the flame by mixing gas and air in the appropriate amounts.Full Answer >