When can gas be liquefied? When gas is compressed too much, heat is produced, so it is necessary to cool it. Cooling lowers the temperature of compressed gas and helps in liquefying it, Hence, a gas can be liquefied by applying high pressure and lowering the temperature (cooling). What temperature and pressure conditions favor the […]
What does an emission spectrum look like?
What does an emission spectrum look like? An emissions spectrum looks like a set of colored lines on a black background as opposed to an absorption spectrum which looks like black lines on a colored background. It’s a set of frequencies of the electromagnetic spectrum emitted by excited elements of an atom. Which property can […]
What is dependent variable in science?
What is dependent variable in science? The dependent variable is the variable that is being measured or tested in an experiment. 1 For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants’ test scores, since that is what is being measured. Is price dependent or independent […]
What is simple sentence structure?
What is simple sentence structure? Simple Sentence Structure A simple sentence consists of one independent clause. (An independent clause contains a subject and verb and expresses a complete thought.) I like coffee. Mary likes tea. The earth goes round the sun. What does a simple sentence need? Simple sentences have one subject and one verb […]
What famous person has dissociative identity disorder?
What famous person has dissociative identity disorder? The painter Kim Noble is a niblet-sized woman with long, auburn hair and startlingly blue eyes. She lives in a small terrace house in south London with her 14-year-old daughter Aimee, two dogs and more than 100 separate personalities. Kim, 50, has dissociative identity disorder (DID). Does a […]
Why are hybrid orbitals formed?
Why are hybrid orbitals formed? Hybrid orbitals are the result of a model which combines atomic orbitals on a single atom in ways that lead to a new set of orbitals that have geometries appropariate to form bonds in the directions predicted by the VSEPR model. The VSEPR model predicts geometries that are very close […]
How many electrons are transferred in ionic bonds?
How many electrons are transferred in ionic bonds? The tendency to form species that have eight electrons in the valence shell is called the octet rule. The attraction of oppositely charged ions caused by electron transfer is called an ionic bond. The strength of ionic bonding depends on the magnitude of the charges and the […]
Which QB can throw the fastest?
What are the major differences between the inner and outer planets?
What are the major differences between the inner and outer planets? The four inner planets have slower orbits, slower spin, no rings, and they are made of rock and metal. The four outer planets have faster orbits and spins, a composition of gases and liquids, numerous moons, and rings. The outer planets are made of […]