Search results
Results From The WOW.Com Content Network
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics. This article contains the list of certain mnemonics in chemistry.
Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number 19. It is a silvery white metal that is soft enough to easily cut with a knife. [9] Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure.
Potassium levels that are only slightly below the normal range can be managed with changes in the diet. [3] Lower levels of potassium require replacement with supplements either taken by mouth or given intravenously. [3] If given intravenously, potassium is generally replaced at rates of less than 20 mmol/hour. [1]
The international pictogram for oxidizing chemicals. Dangerous goods label for oxidizing agents. An oxidizing agent (also known as an oxidant, oxidizer, electron recipient, or electron acceptor) is a substance in a redox chemical reaction that gains or "accepts"/"receives" an electron from a reducing agent (called the reductant, reducer, or electron donor).
Because potassium concentrations are very low, they usually have little effect on the calculated gap. Therefore, omission of potassium has become widely accepted. This leaves the following equation: = [Na +] - ([Cl −] + [HCO − 3]) Normal AG = 8-16 mEq/L Expressed in words, the equation is: Anion Gap = sodium - (chloride + bicarbonate)
Calcium-activated potassium channels are potassium channels gated by calcium, [1] or that are structurally or phylogenetically related to calcium gated channels. They were first discovered in 1958 by Gardos [ who? ] who saw that calcium levels inside of a cell could affect the permeability of potassium through that cell membrane.
Potassium (K) 3.5, [5] [14] 3.6 [15] 5.0, [5] [14] [15] 5.1: mmol/L or mEq/L [14] See hypokalemia or hyperkalemia: 14 [17] 20 [17] mg/dL Chloride (Cl) 95, [14] 98, [18] 100 [5] 105, [14] 106, [18] 110 [5] mmol/L or mEq/L [14] See hypochloremia or hyperchloremia: 340 [19] 370 [19] mg/dL Ionized calcium (Ca) 1.03, [20] 1.10 [5] 1.23, [20] 1.30 [5 ...
This modulation of synaptic transmission and electrical discharge at the cellular level is due to BK channel expression in conjunction with other potassium-calcium channels. [10] The opening of these channels causes a drive towards the potassium equilibrium potential and thus play a role in speeding up the repolarization of action potentials. [10]