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 are the two factors of gravity and how do they affect gravitational pull?
What are the two factors of gravity and how do they affect gravitational pull? Newton’s law also states that the strength of gravity between any two objects depends on two factors: the masses of the objects and the distance between them. Objects with greater mass have a stronger force of gravity between them. Objects that […]
Does friction depend on surface area?
Does friction depend on surface area? Friction is a contact force when two surfaces interact. Notice that both of these friction formulas ONLY depend on the coefficient of friction and the normal force. It does not depend the area of contact, it doesn’t depend on the sliding speed. Is friction dependent on mass? Friction DOES […]
What happens when the retina detects light?
What happens when the retina detects light? When a photon reaches your eye it passes through the transparent cornea and then through the lens which refracts and focuses the light onto your retina, where the light is selectively detected and absorbed by special photoreceptor cells: the rods and cones. Why do doctors shine a light […]
What is the definition of system approach?
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 […]
Which country is best in nuclear power?
Which country is best in nuclear power? Top 15 Nuclear Generating Countries – by Generation Country 2018 Nuclear Electricity supplied (GW-hr) United States 807,078 France 395,908 China 277,056 Russia 191,340 Which country is first in nuclear power? Nuclear power plants currently operate in 30 countries. Most are in Europe, North America, East Asia and South […]
Is renewable energy really better?
Is renewable energy really better? Renewables generate more energy than is used in their production, and produce fewer emissions than other power sources over their lifetime. While all sources of electricity result in some GHG emissions over their lifetime, renewable energy sources have substantially fewer emissions than fossil fuel-fired power plants. What are the benefits […]
What is the degree measure of each arc along the rim?
What gases are released when wood burns?
What gases are released when wood burns? When wood is burned, the combustion reaction produces heat and emissions in the form of water, organic vapors, gases, and particulates. The emissions of most concern are carbon monoxide (CO), carbon dioxide (CO2), sulfur oxides (SOx), and nitrogen oxides (NOx). Does burning wood cause global warming? Scientists estimate […]
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 […]