Why does boiling point of isomeric alkanes decrease with branching? Where you have isomers, the more branched the chain, the lower the boiling point tends to be. Van der Waals dispersion forces are smaller for shorter molecules and only operate over very short distances between one molecule and its neighbors. Which has more boiling point […]
What are the 4 types of winds?
What are the 4 types of winds? The Four Major Wind Systems and Wind Belts: The four major wind systems are the Polar and Tropical Easterlies, the Prevailing Westerlies and the Intertropical Convergence Zone. These are also wind belts. There are three other types of wind belts, also. Does wind always blow in same direction? […]
What does 60 feet 6 inches mean in baseball?
What does 60 feet 6 inches mean in baseball? 60 feet 6 inches is a hallowed baseball number. It might be time for a change. Francis Richter, the editor of the weekly newspaper “Sporting Life,” helped promote the idea of moving the pitcher five feet further from the batter. Before the 1893 season, the National […]
Can you use hand signals instead of blinkers?
Can you use hand signals instead of blinkers? Is it legal to use hand turn signals? Absolutely. These three hand signals are recognized under the Uniform Vehicle Code, which state laws conform to. But apart from these three, there’s another hand turn signal that some people use to inform or allow drivers from the rear […]
Why has psychology changed over the years?
Why has psychology changed over the years? Psychology changed dramatically during the early 20th-century as another school of thought known as behaviorism rose to dominance. Instead, behaviorism strove to make psychology a more scientific discipline by focusing purely on observable behavior. Why do we need to know the history of psychology? Why is it important […]
Why do people get more injuries when he falls on cemented floor than on sand?
Has someone or have someone?
Has someone or have someone? “Someone has” is correct, because someone is a single person and thus equivalent to “he” or “she,” which are third-person singular pronouns, while “has” is the third-person present-tense conjugation of the root verb “to have.” Sentence fragments are dangerous. Can we use have with someone? because anyone is a singular […]
Why is francium so reactive?
Why is francium so reactive? Explanation: Francium is an alkali metal in group 1/IA. All alkali metals have one valence electron. This makes it easier to remove the electron and makes the atom more reactive. Why is F2 so reactive? Why is fluorine gas (F2) reactive if it is already a molecule? This is because […]
How did movable type impact China?
How did movable type impact China? Bi Sheng’s movable type changed how ancient China printed its documents, making printing more efficient and easier. Instead of carving an entire book into one huge block, characters are carved into small clay blocks. Why is printing important to modern society? The printing press allows us to share large […]
What is the difference between isotopic mass and atomic mass?
What is the difference between isotopic mass and atomic mass? While atomic mass is an absolute mass, relative isotopic mass is a dimensionless number with no units. This loss of units results from the use of a scaling ratio with respect to a carbon-12 standard, and the word “relative” in the term “relative isotopic mass” […]