Is F2 a single or double bond? On the right is the F2 molecule. The diatomic fluorine molecule (F2) contains a single shared pair of electrons. Each F atom also has three pair of electrons that are not shared with the other atom. Is h2 a single or double bond? Hydrogen forms 1 single bond […]
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 […]
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 […]
What is the main purpose of using machine?
What is the main purpose of using machine? The basic purpose for which most simple machines are designed is to reduce the effort (force) required to perform a simple task. To achieve this, the force applied must act over a longer distance or period of time resulting in the same amount of work being performed […]
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 […]
Are heated sapphires still valuable?
Are heated sapphires still valuable? Fine gem-quality, sapphires that have been treated by heat have also increased in value due to demand, but not as significantly. A fine quality sapphire, whether natural or heated is a good purchase. Can you heat treat sapphires at home? If your sapphire has good clarity and a color you […]
Why is de Broglie relationship is only for microscopic objects?
Why is de Broglie relationship is only for microscopic objects? The wave nature of matter, however, has no significance for objects of ordinary size because wavelength of the wave associated with them is too small to be detected. Thus, de-Broglie concept is significant only for sub-microscopic objects in the range of atoms, molecules or smaller […]
How is hydrogen bond formed?
How is hydrogen bond formed? A hydrogen bond is formed when the positive end of one molecule is attracted to the negative end of another. The concept is similar to magnetic attraction where opposite poles attract. Hydrogen has one proton and one electron. This makes hydrogen an electrically positive atom because it has a deficiency […]
Who proposed pulsating theory?
Who proposed pulsating theory? Arthur Eddington What is the meaning of pulsating theory? : a theory that explains the peculiar features of such stars as the Cepheid variables by assuming an expansion and contraction of the star as a whole in a regular periodic pulsation. Why is the Big Bang The most accepted theory? The […]