E n d e Andi had hired me Not so no will be fair See? Yes Very active is water which occur between them Reaction not Redux So there are activities water and these reaction is fast so cannot be used A is four metal coated look sign layer So this layer prevent these metal from farther workstation so cannot be used So Onley will be used RB an F and G.
Chemistry is the science of matter, especially its chemical reactions, but also its composition, structure and properties. Chemistry deals with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds. Chemistry also involves understanding the properties and interactions of individual atoms and molecules for use in larger-scale applications. In chemistry and physics, matter is any substance that has mass and takes up space by having volume.
All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic particles, and in everyday as well as scientific usage, "matter" generally includes atoms and anything made up of them, and any particles and objects that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or sound.
Matter exists in various states known as phases that are defined by various physical properties, such as state of matter, phase, shape, and density. The Standard Model of particle physics and the general theory of relativity describe fundamental particles and the fundamental forces acting between them that control the structure and dynamics of matter.
Click 'Join' if it's correct. Steven W. Chemistry 3 months ago. View Full Video Already have an account? Ahmed A.
Answer Which of the following metals are suitable for use as sacrificial anodes to protect against corrosion of underground iron pipes? Discussion You must be signed in to discuss. Study Materials. Why use Doubtnut? Instant Video Solutions. Request OTP. Updated On: Share This Video Whatsapp. Text Solution. CuZnAgSn Answer :. In the process of providing electrons for the cathodic protection of a less active metal the more active metal corrodes.
The more active metal anode is sacrificed to protect the less active metal cathode. The amount of corrosion depends on the metal being used as an anode but is directly proportional to the amount of current supplied. Sacrificial Anodes are used to protect the hulls of ships, water heaters, pipelines, distribution systems, above-ground tanks, underground tanks, and refineries.
The anodes in sacrificial anode cathodic protection systems must be periodically inspected and replaced when consumed. Cathode Protection When metal surfaces come into contact with electrolytes, they undergo an electrochemical reaction known as corrosion. Other forms of cathode protection are plating, galvanization, and the formation of alloys. What materials are used for sacrificial anodes? How are sacrificial anodes put on?
Applications Sacrificial Anodes are used to protect the hulls of ships, water heaters, pipelines, distribution systems, above-ground tanks, underground tanks, and refineries. Harwood, Geoffrey Herring, and Jeffry D. Ninth ed. Upper Saddle River, N. Problems What are the purposes of using sacrificial anodes? How do sacrificial anodes function? What other forms of cathode protection?
0コメント