How many neutrons does 19 9 F? 10 neutrons Is fluorine-19 an ion? According to the periodic tale, fluorine, F, has an atomic number of 19. We can conclude that fluorine gained an electron to reach a stable octet configuration, and because it has an extra electron it is now called a fluorine ion. Why […]
Can a substance be cooled to a temperature below its freezing point?
Can a substance be cooled to a temperature below its freezing point? Liquids have a characteristic temperature at which they turn into solids, known as their freezing point. In theory, the melting point of a solid should be the same as the freezing point of the liquid. It is possible, however, to cool some liquids […]
What makes a reaction dangerous?
What makes a reaction dangerous? Even slow reactions can be hazardous if they involve large amounts of material or if the heat and gases are confined, such as in a sealed storage drum. Drums that are swollen and distorted from over-pressurization are potentially very dangerous. They may rupture at any time without warning and release […]
Is F2 a single or double bond?
What are the 3 types of serves in volleyball?
What are the 3 types of serves in volleyball? For competitive volleyball, there are three main types of overhand serves: the floater, the topspin, and the jump serve. Try them all to find out which one suits you best, but keep in mind that you will want to be somewhat proficient in all three. What […]
Can walk on Mars?
Can walk on Mars? But how will astronauts walk on Mars, where the gravity is a third of Earth’s? Volunteers walked on force-monitoring platforms while the aircraft flew up and down to recreate martian gravity. The results showed that the ideal walking speed on Mars will be only a little more than half of the […]
What are the negative effects of eutrophication?
What are the negative effects of eutrophication? Oxygen depletion, or hypoxia, is a common effect of eutrophication in water. The direct effects of hypoxia include fish kills, especially the death of fish that need high levels of dissolved oxygen. Changes in fish communities may have an impact on the whole aquatic ecosystem and may deplete […]
How do I calculate average speed?
How do I calculate average speed? The most common formula for average speed is distance traveled divided by time taken. The other formula, if you have the initial and final speed, add the two together, and divide by 2. What is the symbol for average speed? 1. Notation, Terminology, Definitions Quantity Symbol SI Unit Average […]
In which compound is hydrogen bonding found?
In which compound is hydrogen bonding found? Hydrogen bonding occurs only in molecules where hydrogen is covalently bonded to one of three elements: fluorine, oxygen, or nitrogen. These three elements are so electronegative that they withdraw the majority of the electron density in the covalent bond with hydrogen, leaving the H atom very electron-deficient. What […]
Is inflation always bad for the economy?
Is inflation always bad for the economy? Many economists, however, maintain that moderate inflation levels are good for the economy. Moderate inflation is needed to drive consumer spending, which is critical for economic growth. Therefore, rising prices can be considered a good thing. But prices that rise too much or prices that fall are bad. […]