What is the definition of system approach? Systems approach is based on the generalization that everything is inter-related and interdependent. A system is composed of related and dependent element which when in interaction, forms a unitary whole. A system is simply an assemblage or combination of things or parts forming a complex whole. What word […]
What factors affect London forces?
What factors affect London forces? The strength of London dispersion forces depends on the size of the molecule or atom. Larger atoms and molecules have more electrons. This leads to larger dipoles being established. London dispersion forces increase the larger the atomic size. What is the relationship between surface area and London dispersion forces? London […]
Which Cannot be separated physically?
Which Cannot be separated physically? What is a Pure Substance? It is something which cannot be divided into parts by physical means, as it’s all made up of the same thing. Pure substances are either elements or compounds. Elements can NOT be separated into other types of matter (physically or chemically). What are the examples […]
Does every room need a vent?
Does every room need a vent? Today, it is recommended to have one or multiple air vents in each room of your home or business to optimize air flow and reduce the cost of energy spent on cooling your home or office. Do laundry rooms need vented doors? Most Dryer manufacturers will mandate a certain […]
What is the relationship between half-life and decay constant?
What is the relationship between half-life and decay constant? This shows that the population decays exponentially at a rate that depends on the decay constant. The time required for half of the original population of radioactive atoms to decay is called the half-life. The relationship between the half-life, T1/2, and the decay constant is given […]
What is the degree measure of each arc along the rim?
Does oxygen follow octet rule?
Does oxygen follow octet rule? Octet rule: The concept that compounds containing carbon, nitrogen, oxygen, and fluorine are more stable if these atoms have eight valence electrons. When one of these atoms has less than eight valence electrons it has an open octet. Every carbon, nitrogen, oxygen, and fluorine atom in this molecule has a […]
What is difference between peroxide and superoxide?
What is difference between peroxide and superoxide? The primary difference between a peroxide and a superoxide lies in the oxidation state of the oxygen atom. In a peroxide, the oxidation state of oxygen is known to be -1 whereas in a superoxide, the oxidation state of oxygen is known to be -1/2. What is phosphorus […]
Which describes the first law of thermodynamics?
Which describes the first law of thermodynamics? The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy. This means that heat energy cannot be created or destroyed. “So, it’s a restatement of conservation of energy.” What is the second […]
What speed do radio waves travel in a vacuum?
What speed do radio waves travel in a vacuum? Electromagnetic radiation is a type of energy that is commonly known as light. Generally speaking, we say that light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3.0 * 108 meters per second through a vacuum. How far can […]