What element has an oxidation number of 1+? hydrogen What is the oxidation number of Na? +1 What is the oxidation number for NO3? In the NO3- ion, each oxygen is assigned an oxidation state of -2. Since N-6 = -1, the oxidation state of nitrogen in NO3- will be +5. What is the difference […]
Does melting release energy?
Does melting release energy? Note that melting and vaporization are endothermic processes in that they absorb or require energy, while freezing and condensation are exothermic process as they release energy. What are all the changes of state? Changes of state are physical changes in matter. They are reversible changes that do not involve changes in […]
What are the 4 ways energy can be transferred between stores?
What are the 4 ways energy can be transferred between stores? There are 4 ways energy can be transferred; Mechanically – By the action of a force. Electrically – By an electrical current. By radiation – By Light waves or Sound waves. By heating – By conduction, convection or radiation. How can you increase the […]
Why is angular velocity negative?
Why is angular velocity negative? First definition Angular velocity is positive when the rotation is counterclockwise and negative when it is clockwise. Second definition: Angular velocity is positive when the angular displacement is increasing and negative when the angular displacement is decreasing. Does radius affect angular velocity? Linear/tangential velocity, in a circlular path, increases with […]
What are the four main functions of the respiratory system quizlet?
What are the four main functions of the respiratory system quizlet? Chapter 21 Structure and Function of the Respiratory System Gas exchange- moves 02 into blood & removes CO2 from the blood. Host defense- provides a barrier between the external environment & the inside of the body. Metabolic organ- synthesize & metabolize different substance. Regulate […]
How can you tell if its a satellite?
How can you tell if its a satellite? Watch the sky closely in the dawn or dusk hours, and you’ll likely see a moving “star” or two sliding by. These are satellites, or “artificial moons” placed in low Earth orbit. These shine via reflected sunlight as they pass hundreds of kilometres overhead. Can I see […]
Does the media always have to act on its right to publish?
Does the media always have to act on its right to publish? Unless restricted by a valid prior restraint (which is rare), the news media are free to publish any information or opinion they desire. This freedom, however, does not immunize them from liability for what they publish. A newspaper that publishes false information about […]
How can I solve all my problems?
Is curl a vector?
Is curl a vector? In vector calculus, the curl is a vector operator that describes the infinitesimal circulation of a vector field in three-dimensional Euclidean space. The curl of a field is formally defined as the circulation density at each point of the field. A vector field whose curl is zero is called irrotational. What […]